SetupShibokenAndPyside macro checks module include path and eventually
decides to disable respective module in case its include directory is
missing. Make this process more straightforward by testing directory
existence; "Location: " string is 10 not 9 characters long and leading
whitespace makes testing for directory name fail.
While there, rename variables to respect that find_pip_package returns
only single include and library path.
dbb46bcad8