* Merge branch 'master' into stable-5.12
* Prepare 5.12.0-SNAPSHOT builds

* Compare getting all refs except specific refs with seek and with filter
* Add getsRefsByPrefixWithSkips (excluding prefixes) to ReftableDatabase
* Add seekPastPrefix method to RefCursor

* Add target platform for eclipse 4.19 staging
* Update orbit to S20210105214148 and com.google.gson to 2.8.6

* Update Orbit to R20191126223242 for 2019-12

* Fix NPE in RebaseTodoFile#parseComments
* Fix NPE in ObjectIdOwnerMap#get
* Fix NPE in CommitOnlyTest#getHead
* FileUtils#lastModifiedInstant should not log error if path doesn't exist
* Cache user global and system-wide git configurations
* Avoid setup and saving FileStoreAttributes compete for ~/.gitconfig lock

* Prepare 4.7.9-SNAPSHOT builds

* Config.set-methods should not touch lines from included files
* Don't inline included configs on FileBasedConfig.save()
* ConfigLine.includedFrom stores source, if it was read from included file

* HttpClientTests: Open OutputStream in try-with-resource
* HttpClientTests: Use assertEquals to assert about response code

* Declare ConfigConstants and GitProtocolConstants final

* LFS: Fix potential NPE in LfsPrePushHook

* JschConfigSessionFactory: Open FileInputStream in try-with-resource
* CommandCatalog: Use StandardCharsets.UTF_8
* JGitTestUtil: Open auto-closeable resources in try-with-resource
* Use StandardCharsets.UTF_8 in tests
* InfoRefsServlet: Open OutputStreamWriter in try-with-resource
* IndexDiffWithSymlinkTest: Open InputStream in try-with-resource
* HugeFileTest: Open RandomAccessFile in try-with-resource

* Config: Rewrite subsection and value escaping and parsing

* Raise minimum version of o.e.jetty.security to 9.4.0

* ReceivePack: integrate push option parsing into recvCommands
* ReceivePack: simplify getPushOptions
* ReceivePack: allow push options to be set

* Fix RefsUnreadableInMemoryRepository

* RevCommit: Better support invalid encoding headers

* Fix possible arithmetic overflow when setting a timeout

* Add missing imports for javadoc to ObjectCountCallback

* JGit v3.4.0.201405281120-rc2

* Implement "git branch --contains" in pgm

* Remove unused logger from RecursiveMerger

* Update the revert command and things relating to revert

* Add support for --no-ff while merging

* Revert "The constructor CmdLineException(String) is deprecated"