CMake: install libs to standard location, remove need for thisbornagain.sh
compare https://sources.debian.org/src/bornagain/1.19.0-2/debian/patches/0003-suffix-patch.patch;
see also #134 (closed) for include paths.
compare https://sources.debian.org/src/bornagain/1.19.0-2/debian/patches/0003-suffix-patch.patch;
see also #134 (closed) for include paths.