error-handlig: pass in Abort exception info to RhodeCode from vcsserver.

vcsserver/git.py

@@ -346,10 +346,11 b' class GitRemote(object):'
         try:
             remote_refs = client.fetch(
                 path=url, target=repo, determine_wants=determine_wants)
-        except NotGitRepository:
+        except NotGitRepository as e:
             log.warning(
                 'Trying to fetch from "%s" failed, not a Git repository.', url)
-            raise exceptions.AbortException()
+            # Exception can contain unicode which we convert
+            raise exceptions.AbortException(repr(e))
 
         # mikhail: client.fetch() returns all the remote refs, but fetches only
         # refs filtered by `determine_wants` function. We need to filter result

vcsserver/hg.py

@@ -607,9 +607,10 b' class HgRemote(object):'
         date = (tag_time, tag_timezone)
         try:
             repo.tag(name, node, message, local, user, date)
-        except Abort:
+        except Abort as e:
             log.exception("Tag operation aborted")
-            raise exceptions.AbortException()
+            # Exception can contain unicode which we convert
+            raise exceptions.AbortException(repr(e))
 
     @reraise_safe_exceptions
     def tags(self, wire):