CMakeLists: allow custom libraries directory
Created by: yastupin
allows to install libpillowfight.so under /usr/lib64 (e.g. on fedora)
with cmake -DLIBDIR=lib64 .
Created by: yastupin
allows to install libpillowfight.so under /usr/lib64 (e.g. on fedora)
with cmake -DLIBDIR=lib64 .