* Support Amazon S3 based storage for LFS

* Introduce specific WantNotValidException for servers

* smart HTTP server: Pass along "want X not valid" to client

* Merge branch 'stable-4.2'

* Revert "Fix warnings about unchecked conversion of MergeResult"

* Merge branch 'stable-4.2'

* Allow deletion of HEAD ref if the repository is bare.

* MergeCommandTest: Use JUnit's assume to check preconditions
* MergeCommandTest: Open Git instances in try-with-resource

* Buck: Simplify root build file

* Don't use deprecated LockFile constructor
* Fix warnings about unchecked conversion of MergeResult
* MockServletConfig: Fix warning about unchecked conversion of Enumeration
* HugeFileTest: Make Git a class member and open in try-with-resource
* Suppress "unchecked cast" warnings related to UploadPackFactory.DISABLED
* DiffAlgorithms: Fix warnings about variable hiding
* DirCacheBasicTest: Open ObjectInserter.Formatter in try-with-resource
* DirCacheBuilderIteratorTest: Open TreeWalk in try-with-resource
* DirCacheCGitCompatabilityTest: Open TreeWalk in try-with-resource
* DirCacheCheckoutMaliciousPathTest: Open Git and RevWalk in t-w-r
* DirCacheIteratorTest: Open TreeWalk instances in try-with-resource
* ForPathTest: Open TreeWalk in try-with-resource
* GitConstructionTest: Open Git instance in try-with-resource
* IndexDiffTest: Open Git instances in try-with-resources
* ManifestParserTest: Don't use deprecated StringBufferInputStream
* InMemoryRepository: Remove unused RevWalk from batch method signature

* IndexModificationTimesTest: Open Git instances in try-with-resource

* InterIndexDiffFilterTest: Open TreeWalk in try-with-resource

* LockFileTest: Open Git instance in try-with-resource

* Merge branch 'stable-4.1' into stable-4.2

* JGit v4.1.2.201602141800-r

* Add Buck build aliases
* Update Buck version to the same version used in Gerrit master
* Fix buck classpath for tests

* Merge branch 'stable-4.2'

* Fix packaging of lfs bundles

* NoteMapTest: Open TreeWalk instances in try-with-resource
* ObjectDirectoryTest: Fix warnings about variable hiding
* PackWriterTest: Open RevWalk in try-with-resource
* PatchIdDiffFormatterTest: Open Git and PatchIdDiffFormatter in try-with-resource
* PathSuffixFilterTest: Open TreeWalk in try-with-resource
* PostOrderTreeWalkTest: Open TreeWalk in try-with-resource
* PullCommandWithRebaseTest: Open RevWalk in try-with-resource
* PushCommandTest: Open Git instances in try-with-resource
* RacyGitTests: Open NameConflictTreeWalk in try-with-resource
* RecursiveMergerTest: Open TreeWalk and BufferedReader in try-with-resource
* ReflogConfigTest: refactor commit method to avoid variable hiding
* Update .mailmap
* RefDirectoryTest: Fix warning about member variable hiding
* ReflogResolveTest: Open Git instances in try-with-resource
* ReflogTest: Open Git instances in try-with-resource
* RepoCommandTest: Open Git instances in try-with-resource

* Add Attribute Macro Expansion

* Merge branch 'stable-4.2'

* Merge branch 'stable-4.1' into stable-4.2

* RepoProject: Fix warnings about variable hiding

* RepoTest: Open Git in try-with-resources

* RepositoryResolveTest: Open Git in try-with-resource

* RepositoryTestCase: Open autocloseable types in try-with-resource

* ResetCommandTest: Use Git member in testHardResetAfterSquashMerge

* ResolveMergerTest: Open Git in try-with-resource

* RevCommitListTest: Open Git and RevWalk in try-with-resource

* RevCommitParseTest: Open ObjectInserter.Formatter in try-with-resource

* RevObjectTest: Open RevWalk in try-with-resource

* RevTagParseTest: Open ObjectInserter.Formatter in try-with-resource

* RevertCommandTest: Open Git in try-with-resource

* SquashMessageFormatterTest: Open git in try-with-resource

* StatusCommandTest: Open Git in try-with-resource

* SubmoduleAddTest: Open Git in try-with-resource

* SymlinksTest: Open git and TreeWalk in try-with-resource

* T0003_BasicTest: Open autocloseable types in try-with-resource

* TextHashFunctions: Fix warnings about variable hiding

* TreeFilterTest: Open TreeWalk in try-with-resource

* TreeWalkJava7Test: Open TreeWalk in try-with-resource

* Fix diff for added and removed submodule

* Add support for HEAD requests to HttpClientConnection
* Allow to reuse disableSslVerify method, move it to HttpSupport
* Support LFS protocol and a file system based LFS storage
* Add com.google.gson 2.2.4.v201311231704 to target platform
* Implement SHA-256 abstraction

* Remove unused API problem filters

* Merge branch 'stable-4.2'

* DirCacheCheckoutTest: Open Git and TreeWalk in try-with-resource
* CommitCommand: Remove declaration of unthrown exception
* Branch: Fix variable hiding warning
* ApplyCommandTest: Open Git in try-with-resource
* PackFileTest: Open ObjectInserter.Formatter in try-with-resource

* Merge branch 'stable-4.2'

* 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

* Remove unused dependency to commons logging

* Prevent ChainingCredentialsProvider from adding delegated providers twice