Eclipse JGit: Java implementation of Git 4.11.0 Release Review

Features

• LFS: Enable LFS support for the CLI, better error handling
• LFS: support merge/rebase/cherry-pick/diff/compare with LFS files
• LFS: Dramatically improve checkout speed with SSH authentication
• LFS: pre-push upload support
• LFS: Add remote download to SmudgeFilter
• Add ObjectIdSerializer
• dfs: Try to avoid searching UNREACHABLE_GARBAGE during packing
• RepoCommand: generate relative submodule URLs from absolute URLs.
• RepoCommand: don't record new commit if tree did not change
• RepoCommand: persist unreadable submodules in .gitmodules
• Add negotiation statistics to PackStatistics
• Basic submodule merge handling (bug 494551)
• Add class to access WindowCache statistics
• Progress reporting for checkout

Performance Improvements

• Add a minimum negotiation feature for fetch. Limits how many "have" lines the client sends. This feature is gated behind a "fetch.useminimalnegotiation" configuration flag, which defaults to false.
• GC: Replace Files methods with File alternatives

Fixes

• Fix DiffFormatter for diffs against working tree with autocrlf=true (bug 530106)
• Fix processing of gitignore negations (bug 409664)
• PathMatcher: fix handling of **/
• Don't subclass ThreadLocal to avoid memory leak in NLS (bug 449321)
• Set context classloader to null in WorkQueue (bug 517107)
• Fix ssh host name handling for Jsch (bug 531118)
• Fix that Jsch overrides the port in the URI with the one in ~/.ssh/config
• InitCommand: Don't leave Repository open after Git is closed
• MergedReftable to skip shadowed refs in same reftable
• Fix CleanCommand not to throw FileNotFoundExceptions (bug 514434)
• GC: Remove empty references folders
• Close RevWalk in BranchTrackingStatus.of() (bug 530757)
• Fix index blob for merges with CRLF translations (bug 499615)
• Honor CRLF settings when writing merge results (bug 499615)
• Minor improvements in git config file inclusions
• Enforce DFS blockLimit is a multiple of blockSize
• Skip broken symbolic ref in DfsReftableDatabase
• Revert handling of ssh IdentityFile to pre-4.9 behavior (bug 529173)
• RefDirectory#hasLooseRef: Fix stream resource leak reported by error-prone
• Ensure DirectoryStream is closed promptly
• Fix file handle leak in FetchCommand#fetchSubmodules (bug 526494)
• Skip unborn branches in UploadPack
• TransportLocal should reuse FS from source repo

Build and Release Engineering

• Upgrade spotbugs-maven-plugin to 3.1.2
• Update orbit to S20180302171354 (photon) and R20180206163158 (oxygen)
• Update tycho to 1.1.0
• Bazel: Support building with Java 9
• Update tycho to 1.1.0
• Upgrade gson to version 2.8.2
• Upgrade commons-compress to 1.15
• Upgrade error_prone_core to 2.2.0
• Upgrade Spotbugs to 3.1.1
• Add com.jcraft.jzlib 1.1.1 (bug 529129)