macOS PPSSPP 1.7.5 is missing

[LunaMoo]

Build instructions can be found here.

Most common mistake people make is to download zipped source code from github instead of using git and forget to download submodules, or use git, but forget to init and sync submodules resulting in same thing, some people also forget to install their system specific dependencies. We use Travis CI to ensure we don't break platforms with no active contributors.