Fix qt bindings installation on 64-bit systems + version update to 3.0.1

While rebuilding binary packages in OBS I noticed that Qt bindings were still installed to /lib instead of /lib64 for 64-bit systems. I missed this when updating the main library install path. Also there was a discrepancy in version number in CMakeLists.txt (3.0.0) and include/psmove.h (0x030001), so updated CMakeLists.txt value to 3.0.1.