SvnServer: always log client disconnect,
even if exception occurs
Fix client hangs on server errors in report mode.
Begin commit command.
Fake svn commit for simple file change.
Begin applying delta from commit.
Merge branch 'slonopotamus-log_client_disconnect'

Conflicts:
	git-as-svn/src/main/java/svnserver/server/SvnServer.java
Refactoring: replace ClientErrorException with SVNException
Create BLOB-s in git repository on svn commit