Baseline: 67c89b31f1d40635ad122639c3099ac3d882935d
Cherry picks:
+ cf701ebeab2565e910453cad8b1b950553596d83:
Fix performance regression on builds that change a test
configuration flag.
Important changes:
- On Linux, the default limit on the number of `--watchfs` file
events per directory has been raised to 10,000 (from 500). If
needed, it can be increased further via
`--host_jvm_args=-Djdk.nio.file.WatchService.maxEventsPerPoll=<lim
it>`.
This release contains contributions from many people at Google, as well as Fabian Meumertzheim.