Merge branch 'master' into stable-5.3

* master:
  Update Orbit to R20190226160451
  Upgrade maven-javadoc-plugin to 3.1.0
  diff: add option metaVar for --src-prefix and --dst-prefix
  ResolveMerger: Destroy TemporaryBuffer on unchecked exceptions
  Expose the filter blob limit in UploadPack
  Upgrade error_prone_core to 2.3.3
  On Windows use %APPDATA%\gnupg as GPG directory if it exists
  Remove duplicate externalized message
  RebaseCommand: tighten check for --preserve-merges on --continue
  RebaseCommand: fix ONTO_NAME, and --preserve-merges is interactive
  RebaseCommand: use orig-head to abort
  Fix core.autocrlf for non-normalized index
  RebaseCommand: use orig-head in addition to head
  SHA1: Use externalized message in log
  JGitText: Remove unnecessary suffix from externalized message identifier
  FS_POSIX: Externalize log message
  Strongly reference indices in DfsPackFile
  Update Orbit to S20190219190953
  Update README
  Update README
  Add missing @since tag for new API method getUpdateIndex
  Fix NPE in PlotCommitList
  CommitBuilder: Deprecate setEncoding(String)
  CommitBuilder: Add missing periods on methods' Javadoc
  Upgrade wagon-ssh to 3.3.2
  Fix bug in copyPackBypassCache's skip 'PACK' header logic
  Upgrade spotbugs to 3.1.11
  Atomic file creation: hard-linking may not be allowed
  Update Orbit to S20190129210011
  Fix GC.deleteEmptyRefsFolders
  Enable cloning only specific tags
  Delete jgit-4.5 target platform
  Add 4.11-staging target platform and update Orbit to I20190123233226
  Upgrade jacoco-maven-plugin to 0.8.3
  Bazel: Format BUILD file with buildifier
  RenameBranchCommand: more consistent handling of short ref names
  SshdSessionFactory: generalize providing default keys
  Allow to check for signing key
  Handle premature EOF in BundleFetchConnection
  pgm: Fix missing braces in Version.run()
  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
  pgm: Fix missing braces in Reset.run()
  pgm: Handle GitAPIException in Reset command
  pgm: Handle GitAPIException in Repo command
  pgm: Handle exceptions in Remote command
  pgm: Handle exceptions in Reflog command
  pgm: Handle IOException in ReceivePack command
  SmartClientSmartServerTest: Open Repository in try-with-resource
  SmartClientSmartServerTest: Open ObjectInserter.Formatter in try-with-resource
  SmartClientSmartServerTest#addBrokenContext: Remove unused TestRepository
  IO: Open TemporaryBuffer.Heap in try-with-resource
  GitSmartHttpTools: Open SideBandOutputStream in try-with-resource
  TemporaryBufferTest: Open TemporaryBuffer in try-with-resource
  Scanner: Open RevWalk in try-with-resource
  SubmoduleWalkTest: Open Repository in try-with-resource
  SideBandOutputStreamTest: Open SideBandOutputStream in try-with-resource
  UnionInputStreamTest: Open UnionInputStream in try-with-resource
  Merge: Avoid non-localised literal string warning for "recursive"
  pgm: Fix missing braces in Push.run()
  pgm: Handle exceptions in Push command
  pgm: Fix missing braces in MergeBase.run()
  pgm: Handle IOException in MergeBase command
  pgm: Fix missing braces in Merge command
  pgm: Handle exceptions in Merge command
  pgm: Fix missing braces in LsTree.run()
  pgm: Handle exceptions in LsTree command
  pgm: Fix missing braces in LsRemote.run()
  pgm: Handle exceptions in LsRemote command
  pgm: Handle exceptions in LsFiles command
  pgm: Fix missing braces in Log.run()
  pgm: Handle exceptions in Log command
  pgm: Handle exceptions in Init command
  pgm: Handle IOException in IndexPack command
  pgm: Fix missing braces in Fetch.run()
  pgm: Handle IOException in Fetch command
  pgm: Handle GitAPIException in Gc command
  pgm: Fix missing braces in DiffTree.run()
  pgm: Handle exceptions in DiffTree command
  pgm: Fix missing braces in Diff.run()
  pgm: Handle exceptions in Diff command
  RawParseUtils: Avoid import of java.nio.charset.StandardCharsets
  Consistently import constants from StandardCharsets as static
  LocalDiskRepositoryTestCase#createRepository: Default auto-close to false
  UploadPack: Suppress false-positive resource leak warning
  PushConnectionTest: Open TestRepository in try-with-resource
  MergerTest: Open TestRepository in try-with-resource
  MergeCommandTest: Open TestRepository in try-with-resource
  PackWriterTest: Open TestRepository in try-with-resource
  ReceivePackAdvertiseRefsHookTest: Open TestRepository in try-with-resource
  SubmoduleStatusTest: Open TestRepository in try-with-resource
  UploadPackTest: Open TestRepository in try-with-resource
  PackParserTest: Open TestRepository in try-with-resource
  SmartClientSmartServerTest: Open TestRepository in try-with-resource
  Stop using deprecated methods of RemoteSetUrlCommand/RemoteRemoveCommand
  SmartClientSmartServerTest: Stop using deprecated Repository#hasObject
  DumbClientSmartServerTest: Open TestRepository in try-with-resource
  DumbClientDumbServerTest: Open TestRepository in try-with-resource
  DirCacheCheckoutTest: Open TestRepository in try-with-resource
  HttpTestCase#fsck: Open TestRepository in try-with-resource
  CheckoutCommandTest: Add comment to document intentionally empty catch block
  pgm: Fix missing braces in Describe.run()
  pgm: Handle exceptions in Describe command
  pgm: Handle exceptions in Config command
  pgm: Fix too wide lines in Commit.run()
  pgm: Fix missing braces in Commit.run()
  pgm: Handle exceptions in Commit command
  pgm: Handle exceptions in Clean command
  pgm: Handle GitAPIException in Fetch command
  Fix missing braces in Branch.run()
  pgm: Handle exceptions in Branch command
  Fix missing braces in Blame.run()
  pgm: Handle NoWorkTreeException and IOException in Blame command
  Use try-with-resource for reader in Blame.run()
  pgm: Handle GitAPIException in Add command

Change-Id: I6d546885beb9596120e201973995a7c6bfe115e0