continuous-build.sh: fix working directory

continuous-build.sh

@@ -3,13 +3,15 @@ set -e
 
 if [ "${COVERITY_SCAN_BRANCH}" != 1 ]; then
 	cd `dirname $0`
+	cd ..
 	export JEHANNE=`pwd`
 	export PATH="$JEHANNE/hacking/bin:$PATH"
 	export SH=`which rc`
 	export ARCH=amd64
 	git clean -x -d -f
 	if [ ! -f "$JEHANNE/hacking/bin/ufs" ]; then
-		./hacking/buildtools.sh
+		echo "Cannot find build tools in $JEHANNE/hacking/bin"
+		$JEHANNE/hacking/buildtools.sh
 	fi
 
 	echo