scm: git: backout r5340 (#8081, #8083)....
scm: git: backout r5340 (#8081, #8083).
Git on Redmine CI Server does not support "--no-decorate" option of "git log".
git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/1.1-stable@5346 e93f8b46-1217-0410-a6f0-8f06a7374b81