If building within a git repository search the last log message for a 'git-svn-id'. If found, the commit has a corresponding svn revision number and we will use the SVN-xxx-rxxx revision form. Otherwise use the output of 'git describe --long --always --tags --dirty=M' as the version. Signed-off-by: Shaun Ruffell <sruffell@digium.com> Acked-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com> Origin: http://svnview.digium.com/svn/dahdi?view=rev&rev=9396 git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/branches/2.4@9757 a0bf4364-ded3-4de4-8d8a-66a801d63aff