xbps-src: added -G to enable XBPS_USE_GIT_REVS.

xbps-src

@@ -119,6 +119,8 @@ Options:
 -f  Force building and registering binary packages into the local repository,
     even if same version is already registered.
 
+-G  Enable XBPS_USE_GIT_REVS (see etc/defaults.conf for more information).
+
 -g  Enable building -dbg packages with debugging symbols.
 
 -H  <hostdir>
@@ -314,11 +316,12 @@ readonly XBPS_MACHINE=$(uname -m)
 #
 XBPS_OPTIONS=
 
-while getopts "a:CfghH:Ij:Lm:No:r:V" opt; do
+while getopts "a:CfgGhH:Ij:Lm:No:r:V" opt; do
     case $opt in
         a) readonly XBPS_CROSS_BUILD="$OPTARG"; XBPS_OPTIONS+="-a $OPTARG ";;
         C) readonly XBPS_KEEP_ALL=1; XBPS_OPTIONS+="-C ";;
         f) readonly XBPS_BUILD_FORCEMODE=1; XBPS_OPTIONS+="-f ";;
+        G) readonly XBPS_USE_GIT_REVS=1; XBPS_OPTIONS+="-G ";;
         g) readonly XBPS_DEBUG_PKGS=1; XBPS_OPTIONS+="-g ";;
         H) readonly XBPS_HOSTDIR="$(readlink -m $OPTARG 2>/dev/null)"; XBPS_OPTIONS+="-H $XBPS_HOSTDIR ";;
         h) usage && exit 0;;