Simplify mercurial revision command

Not only does this require less sed-magic, it also fixes FS#12286 where
fetching the revision number fails if mercurial is in compact mode.

Signed-off-by: Dan McGee <dan@archlinux.org>

scripts/makepkg.sh.in

@@ -1062,7 +1062,7 @@ devel_check() {
 				hg clone $_hgroot/$_hgrepo ./src/$_hgrepo
 				cd ./src/$_hgrepo
 			fi
-			newpkgver=$(hg tip | sed -n '1s/[^0-9]*\([^:]*\):.*$/\1/p')
+			newpkgver=$(hg tip --template "{rev}")
 			cd ../../
 		fi