Renamed files for consistency

--HG--
rename : src/render/direct3d/SDL_d3drender.c => src/render/direct3d/SDL_render_d3d.c
rename : src/render/opengl/SDL_renderer_gl.c => src/render/opengl/SDL_render_gl.c
rename : src/render/opengles/SDL_renderer_gles.c => src/render/opengles/SDL_render_gles.c
rename : src/render/software/SDL_renderer_sw.c => src/render/software/SDL_render_sw.c
rename : src/render/software/SDL_renderer_sw_c.h => src/render/software/SDL_render_sw_c.h

src/render/SDL_render.c

@@ -27,7 +27,7 @@
 #include "SDL_render.h"
 #include "SDL_sysrender.h"
 #include "../video/SDL_pixels_c.h"
-#include "software/SDL_renderer_sw_c.h"
+#include "software/SDL_render_sw_c.h"
 
 
 #define CHECK_RENDERER_MAGIC(renderer, retval) \