update tolua repo if needed

s/cmake-init

@@ -107,20 +107,22 @@ HEREDOC
 
 path="$(which tolua)"
 if [ "$HAVE_TOLUA" = "0" ] || [ -z $path ] ; then
- echo "tolua is not installed, building from source"
- cd $ROOT
- if [ ! -d tolua/include ]; then
-  echo "fetching tolua from github..."
-  git clone https://github.com/ennorehling/tolua.git tolua
- fi
- echo "building tolua..."
+echo "tolua is not installed, building from source"
+cd $ROOT
+if [ ! -d tolua/include ]; then
+ echo "fetching tolua from github..."
+ git clone https://github.com/ennorehling/tolua.git tolua
  cd tolua
- make
- cd -
+else
+ cd tolua
+ git pull --rebase
+fi
+echo "building tolua..."
+make
+cd -
 cat >> $BUILD/config.cmake <<TOLUA
 SET(PC_TOLUA_DIR "$ROOT/tolua" CACHE PATH "tolua root")
 TOLUA
-
 else
  echo "tolua is $path"
 fi