Tell clang to compile against the C++11 standard

Replaced #errors in __APPLE__ ifdefs to simply no-op.

A proper implementation will need some work to interface with CoreAudio
on the Mac which will require some c++ to Obj-C bridging which I don’t
know how to do yet.

More clang combat.  Added set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}
-Wno-inconsistent-missing-override")

Should make it easier to spot actual clang errors.

Everything appears to work anyway!

the mBackgroundOverlay setImage call was causing a later call to an
OpenGL method before SDL had been asked to init OpenGL on Mac OS X

e.g. static std::vector<std::shared_ptr<Sound> > sSoundVector;

Generally a good idea to ignore dot files, but especially important on
OS X which spews ._SomeFile files on filesystems which do not natively
support HFS+ metadata streams

Oops.  Left some cruft behind in dotfile exclusion.

Fixes issue Aloshi#349

MacOS Support (Thanks @displaced!)

MVC2015 & Sorting (Thanks @aslater!)

Initial commit for allowing hidden files

The old implementation hardcoded a the directory ~/.emulationstation
everywhere. This implementation uses compiler flags to find a sensible
location (XDG compliant on linux, My Documents on Windows, and either
XDG or Application Support on OSX)

Since I've wanted to build on OSX I had to dummy out or implement for
the OSX compiler flags. I plan on using SDL to do manual mixing so I
removed the rest too.

I basically made clang happy, there are still warnings for literal
string compares which I will fix soon. There was also the problem on
calling GL functions before it was initialized.

Proper shutdown and restart on linux

Added symlink support on removeCommonPath

etc.)

Add SDL2 to brew install list for compiling on OSX

Update README.md with SDL2 brew for OSX

Also fixed a bug with both options.

Merging RetroPie Branch

Currently, this requires you to restart ES to take effect.

…f the macro.

Preprocessor checks for Visual Studio broke the GCC6 build, fixed

Bug in checking for config files.

…ion runs under the right permissions !