* Graceful: Create callbacks to with contexts
* Graceful: Say when Gitea is completely finished
* Graceful: Git and Process within HammerTime
Force all git commands to terminate at HammerTime
Force all process commands to terminate at HammerTime
Move almost all git processes to run as git Commands
* Graceful: Always Hammer after Shutdown
* ProcessManager: Add cancel functionality
* Fix tests
* Make sure that process.Manager.Kill() cancels
* Make threadsafe access to Processes and remove own unused Kill
* Remove cmd from the process manager as it is no longer used
* the default context is the correct context
* get rid of double till
* Change tests to make it possible to run TestGit with 1.7.2
* Make merge run on 1.7.2
* Fix tracking and staging branch name problem
* Ensure that git 1.7.2 works on tests
* ensure that there is no chance for conflicts
* Fix-up missing merge issues
* Final rm
* Ensure LFS filters run on the tests
* Do not sign commits from temp repo
* Restore tracking fetch change
* Apply suggestions from code review
* Update modules/repofiles/temp_repo.go
* Use exec.CommandContext to simplfy timeout handling
And fixing the data races which can be identified by the added tests when -race enabled.
* Use sleep commmand instead of reading from stdin
* Make the error handling go-esque
* Add a process.Manager singleton with process.GetManager()
* Use process.GetManager everywhere
* Fix godoc comments for process module
* Increment process counter id after locking the mutex
Add a sibling to ExecDir which is capable of specifying environment variables,
so that we can invoke `git` with GIT_INDEX_FILE, GIT_DIR, etc..
For #258
