[AD] 5.1 missing allegro5/internal/aintern_shader_cfg.h

[John-Kim M. <le...@gm...>]

I get an Allegro 5.1 build error:
..\allegro.git\5.1\src\win\d3d_disp.cpp(34): fatal error C1083: Cannot open
include file: 'allegro5/internal/aintern_shader_cfg.h'

The magic required for building aintern_shader_cfg.h seems to be missing:

   - "configure_file(...)" in [addons\shader\CMakeLists.txt]
   - aintern_shader_cfg.cmake file

related forum post:http://www.allegro.cc/forums/thread/606143/899765#target

John