autotools.bbclass: Ensure the current working directory is preserved in autotools_stage_all

git-svn-id: https://svn.o-hand.com/repos/poky/trunk@3620 311d38ba-8fff-0310-9ca6-ca027cbcb966

meta/classes/autotools.bbclass

@@ -175,8 +175,10 @@ autotools_stage_all() {
 	fi
 	if [ -d ${STAGE_TEMP}/${libdir} ]
 	then
+		olddir=`pwd`
 		cd ${STAGE_TEMP}/${libdir}
 		las=$(find . -name \*.la -type f)
+		cd $olddir
 		echo "Found la files: $las"		 
 		if [ -n "$las" ]; then
 			# If there are .la files then libtool was used in the