* ReachabilityCheckerTestCase: fix reachable from self test case

* [errorprone] Fix warning InputStreamSlowMultibyteRead
* [errorprone] Make operator precedence explicit in OpenSshConfigFile

* Add Git#shutdown for releasing resources held by JGit process

* Update Orbit to R20200529191137 for final Eclipse release 2020-06
* Organize manifest of org.eclipse.jgit.pgm
* Do not include log4j implementation in jgit
* Decouple JSch from JGit Core
* Decouple BouncyCastle from JGit Core

* UploadPack: Use more relevant refs first in object reachability check
* UploadPack: Refactor to generalize the object reachability checks
* UploadPack: Use BitmappedReachabilityChecker for not advertised wants
* revwalk: Introduce bitmap-based object reachability checker
* revwalk: Extract ObjectReachabilityChecker interface
* UploadPack: Extract walk-based reachability check

* Fix NarrowingCompoundAssignment warnings from Error Prone
* FS_POSIX: handle Files.getFileStore() failures

* Merge branch 'stable-4.9' into stable-4.10

* Fix NPE in PlotCommitList

* Update Apache commons compress to 1.18.0

* Update Ant to 1.10.5
* Update Orbit to S20181120221132 for 2018-12
* Update mockito to 2.13.0

* Simplify RevWalk#iterator by factoring out common code
* Simplify exception handling in RevWalk#iterator

* Merge branch 'stable-4.0' into stable-4.1

* JGit v4.11.2.201809100523-r

* FS: Open TemporaryBuffer in try-with-resource
* EditListTest: Open InputStream in try-with-resource
* EGitPatchHistoryTest: Open BufferedReader in try-with-resource
* T0003_BasicTest: Use CommitBuilder.setEncoding(Charset)
* WalkEncryptionTest: Use StandardCharsets.UTF_8
* GetTextTest: Use StandardCharsets constants instead of CharSet.forName
* EGitPatchHistoryTest: Set input stream encoding with constant
* DirCacheIterator: Open InputStream in try-with-resource
* DumbClientSmartServerTest: Open auto-closeable resources in try-with-resource
* DirCacheCheckoutTest: Open FileInputStream in try-with-resource
* DiffFormatterReflowTest: Open InputStream in try-with-resource

* Prepare 4.8.0-SNAPSHOT builds

* Add missing @since tags for new API

* ReceivePack: Use Java 7 multi-catch for unpackError
* PushConnectionTest: Use Java 7 try-with-resources
* push: Report fatal server errors during pack writing

* Skip logging stack trace on corrupt objects
* Add repository name to failures in HTTP server log

* Remove pack from list when file handle is stale
* Lower log level to warn for handled pack errors

* Fix "description" in o.e.jgit.source.feature/feature.properties

* Provide helper for unlocking a file