Added some Fallback for SDL2 if GL_OES_blend_func_separate is not supported by GLES 1.1 hardware/driver
Added some Fallback for SDL2 if GL_OES_blend_func_separate is not supported by GLES 1.1 hardware/driver

ptitSeb/gl4es,ptitSeb/glshim,ptitSeb/glshim,ptitSeb/gl4es,ptitSeb/glshim,ptitSeb/gl4es,ptitSeb/gl4es,ptitSeb/glshim