[Mono-osx] Homebrew complains about Mono

[Hawk]

Hello,

I installed Mono 2.10.9 Build #11 recently in order to play the game
SpaceChem on my Mac.

Now I'm installing Homebrew and when it completes it produces the
following warnings:

>Warning: /Library/Frameworks/Mono.framework detected
>This can be picked up by CMake's build system and likely cause the build to
>fail. You may need to move this file out of the way to compile CMake.
>Warning: You have a non-Homebrew 'pkg-config' in your PATH:
>  /usr/bin/pkg-config => /Library/Frameworks/Mono.framework/Versions/2.10.9/bin/pkg-config
>
>This was most likely created by the Mono installer. `./configure` may
>have problems finding brew-installed packages using this other pkg-config.

Is this going to be an issue?

If so, can I remove Mono.framework from /Library/Frameworks and
restore the original pkg-config in /usr/bin without causing SpaceChem
to become unplayable?

Thanks for your advice.