Remove defined of __{DATE,TIMESTAMP,TIME}__
Intel groks on using these on cmd line.

Åke Sandgren, 20180810
diff -ru bazel.orig/src/test/java/com/google/devtools/build/lib/analysis/mock/MOCK_CROSSTOOL bazel/src/test/java/com/google/devtools/build/lib/analysis/mock/MOCK_CROSSTOOL
--- bazel.orig/src/test/java/com/google/devtools/build/lib/analysis/mock/MOCK_CROSSTOOL	1980-01-01 00:00:00.000000000 +0100
+++ bazel/src/test/java/com/google/devtools/build/lib/analysis/mock/MOCK_CROSSTOOL	2018-08-10 20:29:25.149401707 +0200
@@ -91,9 +91,6 @@
   # Make C++ compilation deterministic. Use linkstamping instead of these
   # compiler symbols.
   unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
-  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
 
   # Security hardening on by default.
   # Conservative choice; -D_FORTIFY_SOURCE=2 may be unsafe in some cases.
diff -ru bazel.orig/src/test/shell/bazel/testdata/bazel_toolchain_test_data/tools/arm_compiler/CROSSTOOL bazel/src/test/shell/bazel/testdata/bazel_toolchain_test_data/tools/arm_compiler/CROSSTOOL
--- bazel.orig/src/test/shell/bazel/testdata/bazel_toolchain_test_data/tools/arm_compiler/CROSSTOOL	1980-01-01 00:00:00.000000000 +0100
+++ bazel/src/test/shell/bazel/testdata/bazel_toolchain_test_data/tools/arm_compiler/CROSSTOOL	2018-08-10 20:29:25.149401707 +0200
@@ -99,9 +99,6 @@
   # Make C++ compilation deterministic. Use linkstamping instead of these
   # compiler symbols.
   unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
-  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
 
   # Security hardening on by default.
   # Conservative choice; -D_FORTIFY_SOURCE=2 may be unsafe in some cases.
@@ -202,9 +199,6 @@
   target_system_name: "local"
   unfiltered_cxx_flag: "-fno-canonical-system-headers"
   unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
-  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
   tool_path {name: "ar" path: "/usr/bin/ar" }
   tool_path {name: "cpp" path: "/usr/bin/cpp" }
   tool_path {name: "dwp" path: "/usr/bin/dwp" }
diff -ru bazel.orig/tools/cpp/CROSSTOOL bazel/tools/cpp/CROSSTOOL
--- bazel.orig/tools/cpp/CROSSTOOL	1980-01-01 00:00:00.000000000 +0100
+++ bazel/tools/cpp/CROSSTOOL	2018-08-10 20:29:25.153401646 +0200
@@ -141,9 +141,6 @@
   # Make C++ compilation deterministic. Use linkstamping instead of these
   # compiler symbols.
   unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
-  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
 
   # Security hardening on by default.
   # Conservative choice; -D_FORTIFY_SOURCE=2 may be unsafe in some cases.
@@ -247,9 +244,6 @@
   # Make C++ compilation deterministic. Use linkstamping instead of these
   # compiler symbols.
   unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
-  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
 
   # Security hardening on by default.
   # Conservative choice; -D_FORTIFY_SOURCE=2 may be unsafe in some cases.
@@ -352,9 +346,6 @@
   # Make C++ compilation deterministic. Use linkstamping instead of these
   # compiler symbols.
   unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
-  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
 
   # Security hardening on by default.
   # Conservative choice; -D_FORTIFY_SOURCE=2 may be unsafe in some cases.
diff -ru bazel.orig/tools/cpp/unix_cc_configure.bzl bazel/tools/cpp/unix_cc_configure.bzl
--- bazel.orig/tools/cpp/unix_cc_configure.bzl	1980-01-01 00:00:00.000000000 +0100
+++ bazel/tools/cpp/unix_cc_configure.bzl	2018-08-10 20:31:42.415259408 +0200
@@ -303,9 +303,6 @@
             # Make C++ compilation deterministic. Use linkstamping instead of these
             # compiler symbols.
             "-Wno-builtin-macro-redefined",
-            "-D__DATE__=\\\"redacted\\\"",
-            "-D__TIMESTAMP__=\\\"redacted\\\"",
-            "-D__TIME__=\\\"redacted\\\"",
         ],
         "compiler_flag": [
             # Security hardening requires optimization.
diff -ru bazel.orig/tools/osx/crosstool/CROSSTOOL.tpl bazel/tools/osx/crosstool/CROSSTOOL.tpl
--- bazel.orig/tools/osx/crosstool/CROSSTOOL.tpl	1980-01-01 00:00:00.000000000 +0100
+++ bazel/tools/osx/crosstool/CROSSTOOL.tpl	2018-08-10 20:30:31.184371152 +0200
@@ -153,9 +153,6 @@
   builtin_sysroot: ""
   unfiltered_cxx_flag: "-no-canonical-prefixes"
   unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
-  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
   default_python_version: "python2.7"
   feature {
     name: "fastbuild"
@@ -1768,9 +1765,6 @@
   builtin_sysroot: ""
   unfiltered_cxx_flag: "-no-canonical-prefixes"
   unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
-  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
   unfiltered_cxx_flag: "-target"
   unfiltered_cxx_flag: "x86_64-apple-ios"
   default_python_version: "python2.7"
@@ -3401,9 +3395,6 @@
   builtin_sysroot: ""
   unfiltered_cxx_flag: "-no-canonical-prefixes"
   unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
-  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
   unfiltered_cxx_flag: "-target"
   unfiltered_cxx_flag: "i386-apple-watchos"
   default_python_version: "python2.7"
@@ -5037,9 +5028,6 @@
   builtin_sysroot: ""
   unfiltered_cxx_flag: "-no-canonical-prefixes"
   unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
-  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
   unfiltered_cxx_flag: "-target"
   unfiltered_cxx_flag: "x86_64-apple-tvos"
   default_python_version: "python2.7"
@@ -6700,9 +6688,6 @@
   builtin_sysroot: ""
   unfiltered_cxx_flag: "-no-canonical-prefixes"
   unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
-  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
   unfiltered_cxx_flag: "-target"
   unfiltered_cxx_flag: "i386-apple-ios"
   default_python_version: "python2.7"
@@ -8333,9 +8318,6 @@
   builtin_sysroot: ""
   unfiltered_cxx_flag: "-no-canonical-prefixes"
   unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
-  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
   unfiltered_cxx_flag: "-target"
   unfiltered_cxx_flag: "armv7-apple-ios"
   default_python_version: "python2.7"
@@ -9954,9 +9936,6 @@
   builtin_sysroot: ""
   unfiltered_cxx_flag: "-no-canonical-prefixes"
   unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
-  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
   unfiltered_cxx_flag: "-target"
   unfiltered_cxx_flag: "armv7k-apple-watchos"
   default_python_version: "python2.7"
@@ -11578,9 +11557,6 @@
   builtin_sysroot: ""
   unfiltered_cxx_flag: "-no-canonical-prefixes"
   unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
-  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
   unfiltered_cxx_flag: "-target"
   unfiltered_cxx_flag: "arm64-apple-tvos"
   default_python_version: "python2.7"
@@ -13229,9 +13205,6 @@
   builtin_sysroot: ""
   unfiltered_cxx_flag: "-no-canonical-prefixes"
   unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
-  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
   unfiltered_cxx_flag: "-target"
   unfiltered_cxx_flag: "arm64-apple-ios"
   default_python_version: "python2.7"
@@ -14850,9 +14823,6 @@
   builtin_sysroot: ""
   unfiltered_cxx_flag: "-no-canonical-prefixes"
   unfiltered_cxx_flag: "-Wno-builtin-macro-redefined"
-  unfiltered_cxx_flag: "-D__DATE__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIMESTAMP__=\"redacted\""
-  unfiltered_cxx_flag: "-D__TIME__=\"redacted\""
   supports_start_end_lib: false
   default_python_version: "python2.7"
   supports_interface_shared_objects: false