Use rebar to build instead of make
temp win changes
Minor mac fixes (untested)
Fix warnings about 64 to 32 casts
Remove Makefiles and configure scripts and minor fixes
Update with Windows gcc x86 info
Win32: Copy SDL.dll to priv if found and needed
Windows building: Fix bugs when cl.exe does not exist in path
Fix the previous fix, sigh
Fix building on Mac OS X

The X11 headers are no longer in a "standard location", since
the X11 server is no longer provided directly by Apple.
Mac OS X: Ensure that SDL can be found when embedded in Wings

In Wings, the directory structure is the following:

  bin/beam.smp
  Frameworks/SDL.framwork

Adding this -rpath option ensures that the SDL framework can be
found in the same place relative to the BEAM emulator.
Update version