scm: add a repository model method "merge_extra_info()" to merge "extra_info" serializing hash yaml (#7146, #7047)....
scm: add a repository model method "merge_extra_info()" to merge "extra_info" serializing hash yaml (#7146, #7047).
git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@5766 e93f8b46-1217-0410-a6f0-8f06a7374b81