Merge branch 'stable-2.15'
* stable-2.15:
RefUpdater: Add missing cases for switch on RefUpdate.Result
RefUpdater: Add $FALL-THROUGH$ comment to suppress false-positive warning
Remove unnecessarily nested else-clauses
Remove declarations of unthrown exceptions
GitFile: Catch RepositoryNotFoundException and rethrow as NoSuchProjectException
Remove redundant specification of type arguments
Align Eclipse compiler settings with core Gerrit's
Upgrade bazlets to latest stable-2.15 to build with 2.15.9 API
Upgrade bazlets to latest stable-2.15 to build with 2.15.8 API
Change-Id: I8cf1059ec11840a23de3f9e18f13fc74372f9564
