* [spotbugs] Don't use class from java.util.concurrent for locking

* Prepare 5.10.1-SNAPSHOT builds

* JGit v5.10.0.202012021225-rc1

* Remove trailing whitespace

* Upgrade maven-site-plugin to 3.9.0
* Upgrade build-helper-maven-plugin to 3.1.0

* Merge branch 'master' into next

* Increase severity of AmbiguousMethodReference to ERROR
* [error prone] suppress AmbiguousMethodReference in AnyLongObjectId

* Add test for racy git detection in FileSnapshot

* Error Prone: Increase severity of NonOverridingEquals to ERROR
* Error Prone: Increase severity of ImmutableEnumChecker to ERROR
* GitDateParser#ParseableSimpleDateFormat: Make formatStr private final
* BatchRefUpdateTest: Suppress ImmutableEnumChecker warning
* PacketLineIn: Suppress comparison warnings for END and DELIM
* FileSnapshot#toString: Suppress ReferenceEquality warnings
* Blame: Suppress ReferenceEquality warning for RevCommit instances

* Prepare 5.3.2-SNAPSHOT builds

* Fix tools/version.sh

* Implement signing commits using BouncyCastle
* Add signing options to commit CLI
* Allow CommitCommand to sign commits

* Merge branch 'stable-5.2'

* Apache MINA sshd client: test & fix password authentication
* Move SshTestGitServer to new bundle org.eclipse.jgit.junit.ssh
* Apache MINA sshd client: proxy support

* Bazel: Increase severity of ClassCanBeStatic to ERROR
* SshTestBase: Make inner class TestCredentialsProvider static

* UploadPack: Use request instead of field for clientShallowCommits
* UploadPack: Use request instead of field for depth
* UploadPack: Use request instead of field for shallowSince
* UploadPack: Use request in computeShallowUnshallow
* Move deepenSince and deepenNotRefs up to FetchRequest

* Upgrade gson to version 2.8.2
* Upgrade commons-compress to 1.15

* Change StreamGobbler to Runnable to avoid unused Future

* Enhance ResetCommand to allow disabling reflog update

* Remove duplicated single quotes in text not handled by MessageFormat

* 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

* Implement Buck driven build

* Clone should close repository after errors in fetch or checkout

* Externalize error messages used in DfsGarbageCollector
* Use try-with-resource to close resources in DfsGarbageCollector

* Make s3 domain dynamic to support different s3 regions

* Merge branch 'stable-3.7'

* Fix ResetCommand to default to mixed reset

* Rebase: Write an empty "quiet" file to make C Git happy

* Remove unused dependencies

* Add javaewah bundle to features using it

* Cleanup unused import and Java 6 syntax in Archive

* Delete storage.dht package

* Get rid of warning about possible NullPointerException