Allow the Makefile to be more resiliant to broken builds and handle r…

…edirecting 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}