for DEB: install libs to /usr/lib and add dependencies
for DEB: install libs to /usr/lib and add dependencies

set the default prefix to /usr (instead of /usr/local).
add all build libs as dependencies (including our own debs)


git-svn-id: 1af002208e930b4d920e7c2b948d1e98a012c795@940 a9d63959-f2ad-4865-b262-bf0e56cfafb6

psoetens/pcl-svn,psoetens/pcl-svn,psoetens/pcl-svn,psoetens/pcl-svn,psoetens/pcl-svn