Allow the Makefile to be more resiliant to broken builds and handle...

Allow the Makefile to be more resiliant to broken builds and handle redirecting the output better in more shells. Thanks to 'candlerb' on jquery-dev for the suggestion.

Makefile

@@ -41,10 +41,10 @@ ${DIST_DIR}:
 
 init:
 	@@echo "Grabbing external dependencies..."
-	@@if test ! -d test/qunit; then git clone git://github.com/jquery/qunit.git test/qunit; fi
-	@@if test ! -d src/sizzle; then git clone git://github.com/jeresig/sizzle.git src/sizzle; fi
-	@@cd src/sizzle && git pull origin master &> /dev/null
-	@@cd test/qunit && git pull origin master &> /dev/null
+	@@if test ! -d test/qunit/.git; then git clone git://github.com/jquery/qunit.git test/qunit; fi
+	@@if test ! -d src/sizzle/.git; then git clone git://github.com/jeresig/sizzle.git src/sizzle; fi
+	@@cd src/sizzle && git pull origin master > /dev/null 2>&1
+	@@cd test/qunit && git pull origin master > /dev/null 2>&1
 
 jquery: ${DIST_DIR} selector ${JQ}