Export of internal Abseil changes.

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3febef1a42d092676134bd0b0d54d13a878198a2 by Derek Mauro <dmauro@google.com>:

Update to LLVM r361107 and Bazel 0.26.1

PiperOrigin-RevId: 252463968

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0408a7f5c1f990414b2ee6efb615238fc44bcd3a by Gennadiy Civil <misterg@google.com>:

Import of CCTZ from GitHub.

PiperOrigin-RevId: 252432385
GitOrigin-RevId: 3febef1a42d092676134bd0b0d54d13a878198a2
Change-Id: I9edade19982dfe490c7c4b894e094c4e7d80adb1

absl/copts/GENERATED_AbseilCopts.cmake

@@ -77,7 +77,6 @@ list(APPEND ABSL_CLANG_CL_TEST_FLAGS
     "-Wno-unused-template"
     "-Wno-used-but-marked-unused"
     "-Wno-zero-as-null-pointer-constant"
-    "-Wno-gnu-include-next"
     "-Wno-gnu-zero-variadic-macro-arguments"
 )
 
@@ -181,7 +180,6 @@ list(APPEND ABSL_LLVM_TEST_FLAGS
     "-Wno-unused-template"
     "-Wno-used-but-marked-unused"
     "-Wno-zero-as-null-pointer-constant"
-    "-Wno-gnu-include-next"
     "-Wno-gnu-zero-variadic-macro-arguments"
 )
 

absl/copts/GENERATED_copts.bzl

@@ -78,7 +78,6 @@ ABSL_CLANG_CL_TEST_FLAGS = [
     "-Wno-unused-template",
     "-Wno-used-but-marked-unused",
     "-Wno-zero-as-null-pointer-constant",
-    "-Wno-gnu-include-next",
     "-Wno-gnu-zero-variadic-macro-arguments",
 ]
 
@@ -182,7 +181,6 @@ ABSL_LLVM_TEST_FLAGS = [
     "-Wno-unused-template",
     "-Wno-used-but-marked-unused",
     "-Wno-zero-as-null-pointer-constant",
-    "-Wno-gnu-include-next",
     "-Wno-gnu-zero-variadic-macro-arguments",
 ]
 

absl/copts/copts.py

@@ -105,8 +105,6 @@ LLVM_TEST_DISABLE_WARNINGS_FLAGS = [
     "-Wno-unused-template",
     "-Wno-used-but-marked-unused",
     "-Wno-zero-as-null-pointer-constant",
-    # For a libc++ bug fixed in r357267
-    "-Wno-gnu-include-next",
     # gtest depends on this GNU extension being offered.
     "-Wno-gnu-zero-variadic-macro-arguments",
 ]