Merge remote-tracking branch 'aosp/upstream' into master
* aosp/upstream:
Randomize cpu affinity
Be more resilient to directories disappearing during startup
Pass a Loc into FindEmulator for better warnings
Add --color_warnings to make warnings/errors like clang
[AUTHORS] Fix kati instead of glog
Add Koichi Shiraishi to AUTHORS/CONTRIBUTORS
[C++] add +build ignore magic comment for go build
[go] fix ldflags foramt to add '=' for -X flag
[go] fix stat.Dev type to uint64
Allow rules to specify custom ninja pools
Fix some possible performance issues found by clang-tidy
Test: kati tests
Test: multiproduct_build on aosp
Change-Id: I4c427dde2bb9d1a0970e97d1e822e093bd269dfe
