* Bazel: Fix src_sha1 of bcpg-jdk15on

* Merge branch 'stable-5.4' into stable-5.5

* 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

* PackOutputStream: Suppress Error Prone's ShortCircuitBoolean warning

* Update Jetty to 9.4.11.v20180605

* DfsInserter#openStream: Suppress resource warning about DfsReader
* CloneCommand: Suppress resource warning about Repository
* Rename RecursiveMergerTest and ResolveMergerTest to reduce confusion
* ResolveMergerTest: Use @DataPoints instead of @DataPoint
* SubmoduleSyncCommand: Refactor to open Repository in try-with-resource
* SubmoduleUpdateCommand: Refactor to open Repository in try-with-resource
* TransportGitAnon: Suppress resource warning about Socket
* FS#runProcess: Fix OutputStream left unclosed after IOException

* Remove unused API filters

* LfsServerTest: Remove unnecessary suppression of 'restriction' warning
* WrappedRequest: Don't use deprecated ServletRequestWrapper#realPath
* Suppress deprecation warnings related to UploadPackLogger
* AppServer: Remove unnecessary 'unused' suppressions
* HttpClientConnection: Don't use deprecated HttpClient classes

* Redirect all Show output to outs

* Prepare 4.3.0-SNAPSHOT builds

* Silence API errors for new methods added to BitmapBuilder
* Add missing javadoc to bitmap index classes

* Correct @since tags for ObjectFilter

* Fix two nits about DirCacheEntry constructors
* Detect buffering failures while writing rebase todo file

* Fix formatting of PackConfig.toString() & GC.RepoStatistics.toString()
* Allow to get repo statistics from GarbageCollectionCommand before gc

* Use '406 Not Acceptable' when info/refs is disabled
* Compress large /info/refs responses on HTTP

* Use only a single ObjectInserter in ResolveMerger
* Define ObjectInserter.Filter to wrap another ObjectInserter
* Allow applications to pass ObjectInserter to Merger

* Add command support for dropping a stashed commit