* stable-6.0:
FS: debug logging only if system config file cannot be found
FS: debug logging only if system config file cannot be found
Update .factorypath used by annotation processor for benchmarks
Use maven-compiler-plugin's release tag instead of source and target
Don't use deprecated Repository#getAllRefs in Repository
Don't use deprecated Repository#getAllRefs in FileRepository
RevListTest: fix warning that method parameter hides field 'git'
Implement RecordingLogger based on org.slf4j.Logger
Let ObjectDatabase implement AutoClosable
Change-Id: Ie6b3cfa66b319033d4448dcf20362b753c0e9d7c