Don't install Qt4 on OSX. OSX requires prebuilt version from Nokia site.

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>
Fixed an issue with flattened paths in case of multi folder structure of source dirs.

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>