X test.sh can now run under custom kernel whole wc tests as well as wcfs/ only tests

wcfs/test.sh → test.sh

 #!/bin/bash -e
-# run wcfs tests under custom linux kernel
+# run wendelin.core/wcfs tests under custom linux kernel
+
+X=$(cd `dirname $0` && pwd)
 
 if test -z "$qrun_loglevel"; then
-	go build # rebuild wcfs
+	make -C $X --no-print-directory # rebuild everything
 	linux=${LINUX:-$HOME/src/linux/linux/arch/`uname -m`/boot/bzImage}
-	exec ../t/qemu-runlinux "$linux" $0 "$@"
+	exec $X/t/qemu-runlinux "$linux" $0 "$@"
 fi
 
 # executed under qemu-runlinux