tools/setlocalversion: use git svn instead of git-svn

Use the new "git <subcmd>" syntax instead of the deprecated
"git-<subcmd>".
Signed-off-by: NPeter Korsgaard <jacmet@sunsite.dk>

tools/setlocalversion

@@ -25,7 +25,7 @@ if head=`git rev-parse --verify HEAD 2>/dev/null`; then
 
 	# Is this git on svn?
 	if git config --get svn-remote.svn.url >/dev/null; then
-		printf -- '-svn%s' "`git-svn find-rev $head`"
+		printf -- '-svn%s' "`git svn find-rev $head`"
 	fi
 fi