cmake ALLEGRO_HAVE_LINUX_SOUNDCARD_H examples

liballeg/allegro5 CMakeLists.txt :517 

check_include_files(linux/soundcard.h ALLEGRO_HAVE_LINUX_SOUNDCARD_H)

liballeg/allegro5 cmake/AllegroFindOSS.cmake :30 

endif(ALLEGRO_HAVE_LINUX_SOUNDCARD_H)