Add llvm-objcopy to the clang package on Linux.

This is so that it can be used to extract partitions from multi-partition
binaries during the Android build, as described here:

http://lld.llvm.org/Partitions.html

Increases uncompressed package size by 2.7MB and compressed package size
by 1.0MB.

Bug: 972701
Change-Id: Idb19169054ca02d12f713d89a81e4fbdaa10acf8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1647117
Commit-Queue: Peter Collingbourne <pcc@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#668898}

tools/clang/scripts/package.py

@@ -258,6 +258,9 @@ def main():
       # Add llvm-ar for LTO.
       'bin/llvm-ar',
 
+      # Add llvm-objcopy for partition extraction on Android.
+      'bin/llvm-objcopy',
+
       # AddressSanitizer C runtime (pure C won't link with *_cxx).
       'lib/clang/$V/lib/linux/libclang_rt.asan-i386.a',
       'lib/clang/$V/lib/linux/libclang_rt.asan-x86_64.a',
@@ -396,6 +399,7 @@ def main():
   if sys.platform.startswith('linux'):
     stripped_binaries.append('lld')
     stripped_binaries.append('llvm-ar')
+    stripped_binaries.append('llvm-objcopy')
   for f in stripped_binaries:
     if sys.platform != 'win32':
       subprocess.call(['strip', os.path.join(pdir, 'bin', f)])

tools/clang/scripts/update.py

@@ -38,7 +38,7 @@
 # Reverting problematic clang rolls is safe, though.
 CLANG_REVISION = '80fee25776c2fb61e74c1ecb1a523375c2500b69'
 CLANG_SVN_REVISION = '362913'
-CLANG_SUB_REVISION = 1
+CLANG_SUB_REVISION = 2
 
 PACKAGE_VERSION = '%s-%s-%s' % (CLANG_SVN_REVISION, CLANG_REVISION[:8],
                                 CLANG_SUB_REVISION)