Add prefix to config.mk, so that we can install files in the right place.
Add prefix to config.mk, so that we can install files in the right place.

wlach/libroutez,wlach/libroutez,wlach/libroutez,wlach/routez,wlach/routez,wlach/libroutez,wlach/libroutez,wlach/libroutez