Extending a c++ compiler for OSX

Objective-C required compiler flags
-MMD typo
CMake minimun version lowered to 2.8

Not every system has 2.8.8 out-of-the-box
Merge branch 'cmake-build' into cmake-osx
Typo
Merge branch 'cmake-build' into cmake-osx
Added several library paths for OSX and Windows, current focus is on Windows.
Add OpenAL and SDL libs, dlls and headers for Windows for x86 and x64
Some reformatting
Setting output directory

all targets will be moved to bin/{arch}
Merge branch 'cmake-linux' into cmake-windows
Moving Windows binaries to default output directory
Merge branch 'cmake-linux' into cmake-osx
Merge branch 'cmake-windows' into cmake-osx
Incorrect default path for windows
Isolating unix sources
Primordial tweaks for Windows

Force inclusion of dependencies headers
libjpeg, libvorbis and zlib won't be supported on Windows for the moment
(until I find the binaries and for having a friendly build enviroment)
winsock and winmm inclusion

Added link flags on Windows
EFX was lacking on Windows

This did the trick, so now ht compiles with OpenAL
Edit .gitignore