* Upgrade ecj to 3.23.0

* Silence API errors and add missing @since tags caused by 175e6654

* Merge branch 'stable-5.1' into stable-5.2

* Cancel gc if thread was interrupted

* pgm: Handle IOException in Version command
* pgm: Fix missing braces in UploadPack.run()
* pgm: Handle IOException in UploadPack command
* pgm: Handle exceptions in Tag command
* pgm: Fix missing braces in Status.run()
* pgm: Handle exceptions in Status command
* pgm: Fix missing braces in ShowRef.run()
* pgm: Handle IOException in ShowRef command
* pgm: Fix missing braces in Show.run()
* pgm: Handle exceptions in Show command
* pgm: Fix missing braces in Rm command
* pgm: Handle GitAPIException in Rm command
* pgm: Handle exceptions in RevParse command
* pgm: Externalize error message

* AdvertiseErrorTest: Open Transport in try-with-resource
* AddCommandTest: Open PrintWriter in try-with-resource
* FileBasedConfigTest: Open FileOutputStream in try-with-resource
* WalkRemoteObjectDatabase: Open auto-closeable resources in try-with-resource
* TransportSftp: Open BufferedReader in try-with-resource
* ReflogReaderTest: Open FileOutputStream in try-with-resource
* ReflogReaderTest: Fix indentation
* ReflogWriterTest: Open FileInputStream in try-with-resource
* TransportHttp: Open auto-closeable resources in try-with-resource
* RebaseCommandTest: Open BufferedReader in try-with-resource
* DirCacheCGitCompatabilityTest: Open BufferedReader in try-with-resource
* LockFile: Open FileInputStream in try-with-resource
* CheckoutCommandTest: Open FileInputStream in try-with-resource
* SmudgeFilter: Fix Integer boxing warning
* Add ConfigConstants.CONFIG_SECTION_LFS

* Fix default directory set when setDirectory wasn't called.

* ReceivePackAdvertiseRefsHookTest: Don't close repositories in teardown
* RepoCommand#readFile: Don't call Git#getRepository() in try-with-resource
* RepoCommandTest: Don't wrap create{Bare,Work}Directory in t-w-r
* LocalDiskRepositoryTestCase: Only add to toClose through access method

* dump HTTP: Avoid being confused by Content-Length of a gzipped stream

* StreamCopyThread: Do not drop data when flush is observed before writing

* Merge branch 'master' into stable-4.4

* FileTreeIteratorTest: Open Git and RevWalk in try-with-resource
* RebaseCommandTest: Open RevWalk in try-with-resource
* PullCommandTest: Open RevWalk in try-with-resource
* BlameGeneratorTest: Create Git instances in try-with-resource
* Remove unnecessary suppression of deprecation warnings in tests
* DiffEntryTest: Open Git and TreeWalk in try-with-resource
* DiffCommandTest: Open Git and RevWalk in try-with-resource
* CommitCommandTest: Open Git and TreeWalk in try-with-resource

* buck: pin to stable version

* Sort "eager" path-like options to the end of the help
* reset command: provide convenient and meaningful options help
* commit command: allow to specify path(s) argument(s)
* status command: consume more then one argument after --
* repo command: properly name the required 'path' argument
* Un-ignored existing CLI tests which run just fine on Java 7+
* Don't treat command termination due '-h' option as a fatal error

* DirCache: Fix bad code formatting
* DirCacheEntry: Speed up creation by avoiding string cast
* DirCache: Fix getEntriesWithin("") to not include null entries
* Fix performance regression in CanonicalTreeParser

* Bitmap builder: actually compress EWAH bitmaps in memory

* Use local variable in RepositoryTestCase.indexState

* [pgm] Add option --tags for ls-remote

* Implement atomic refs update, if possible by database

* When marking commits as uninteresting don't care if the tree exists

* Do not attempt to read bitmap from invalid pack
* Rename DfsPackFile getBitmap method to match PackFile

* Quickfix for AutoCRLF handling