Eclipse JGit: Java implementation of Git 4.0.0

Update to Java 7

• Update minimum required Java version from Java 5 to Java 7
• Remove bundles org.eclipse.jgit.console and org.eclipse.jgit.java7 which are no longer needed due to update to Java 7
• Implement AutoClosable and use it to ensure resource held by JGit get released when they are no longer needed

API cleanup

• Replace release() methods by close() to support AutoClosable
• Delete some deprecated classes and methods, details are available in Clirr API change report
• ObjectReader: remove the walkAdvice API

Configuration

• Remove the gitprefix logic and rework detecting Git system config file
• Allow to manually set the path to the Git system config file
• Add fsck.allowInvalidPersonIdent to accept invalid author/committers

Protocol

• Add support for quiet capability to ReceivePack
• Support agent= capability in wire protocol

Hooks

• Support for the commit-msg hook

Misc. Enhancements

• Allow ObjectWalk to be filtered by an arbitrary predicate
• Use ANY_DIFF filter in ResolveMerger for bare repositories
• ObjectWalk: make setRetainBody(false) the default
• Make MyersDiff interruptible
• Support --untracked-files in command line status command
• Support "--long" option in DescribeCommand and command line describe command
• Make s3 domain dynamic to support different s3 regions in AmazonS3 transport
• Allow public access to PackIndex
• Enhance ArchiveCommand to allow passing options to underlying stream

Introduce logging

• Use slf4j API to enable logging in JGit
• Use log4j-slf4j to log from org.eclipse.jgit.pgm

Performance Improvements

• Optimize EolAwareOutputStream for bulk output
• Buffer TemporaryBuffer's overflow output stream used by ResolveMerger to improve performance
• RevWalk: Discard uninteresting commits unless RevSort.BOUNDARY

Fixes

• Fix that exceptions in ReceivePack cause Invalid Channel 101 exceptions
• Don't invalidate pack file on InterruptedIOException
• Fix RecursiveMerger in case of multiple, independent base commits
• Fix many warnings
• Fix several memory leaks

Build and release engineering

• Update build to use eclipse-jarsigner-plugin 1.1.2
• Update build to use Tycho 0.23.0
• Update all standard maven plugins to latest versions
• Update to Jetty 9.2.10
• Update to javax.servlet 3.1
• Added more reports to Maven site