Add git support to which_scm utility

@@ -49,10 +49,11 @@
 .B which_scm
 can detect the following types of SCM systems (these are the keywords
 used in the output format):
 .nf
         cvs
+        git
         mercurial
         rcs
         sccs
         subversion
         teamware

@@ -70,8 +71,9 @@
 \fBCODEMGR_WS\fR path to current workspace.
 
 .SH SEE ALSO
 .IR cvs(1) ,
 .IR hg(1) ,
+.IR git(1) ,
 .IR sccs(1)
 .IR svn(1) ,
 .IR workspace(1)