Change makefile order to only update submodules on 'all' target

insterad of always update the submodules, now only "make all" will run
that, thus an "make jquery" will not update them

Makefile

@@ -42,16 +42,13 @@ VER = sed "s/@VERSION/${JQ_VER}/"
 
 DATE=$(shell git log -1 --pretty=format:%ad)
 
-all: jquery min lint
+all: update_submodules jquery min lint
 	@@echo "jQuery build complete."
 
 ${DIST_DIR}:
 	@@mkdir -p ${DIST_DIR}
 
-init:
-	@@if [ -d .git ]; then git submodule update --init --recursive --merge; fi
-
-jquery: init ${JQ}
+jquery: ${JQ}
 
 ${JQ}: ${MODULES} | ${DIST_DIR}
 	@@echo "Building" ${JQ}
@@ -98,6 +95,10 @@ distclean: clean
 	@@echo "Removing submodules"
 	@@rm -rf test/qunit src/sizzle
 
+# change pointers for submodules and update them to what is specified in jQuery
+update_submodules:
+	@@if [ -d .git ]; then git submodule update --init --recursive --merge; fi
+
 # update the submodules to the latest at the most logical branch
 pull_submodules:
 	@@git submodule foreach "git pull origin \$$(git branch --no-color --contains \$$(git rev-parse HEAD) | grep -v \( | head -1)"