Fix Bugzilla integration to work with new Bugzilla 3.2. Bugzilla 3.2 changes the type of all MySQL tables it uses from MyISAM to InnoDB. MyISAM does not support transactions, and performs an implied commit after each update. InnoDB does support transactions, and so exposes a bug where changes to the Bugzilla database were not committed, and so with 3.2 are lost when the database connection closes.

tests: test-walkrepo shouldn't throw SystemExit Write to stdout instead of throwing Exceptions

bookmarks: this is a comment, not a string

Merge bookmarks

Merge backout

Backed out changeset 4c3e0ad58c5b In discussion with mpm and tonfa we decided that we need a more generic solution and not a bookmark specific.

Merge backout

Backed out changeset 187a13bd14c6 In discussion with mpm and tonfa we decided that we need a better rev syntax instead of a bookmark specific solution.

Merge bookmarks

bookmarks: do not overwrite bookmarks.current if not necessary If we update to the ref that the bookmarks.current points to, we do not want to update bookmarks.current