Some of these files are two parts of the same texture. 

Files should be returned in SGI format.

check_f1_txt.rgba 64 x 32 RGBA # check1.c
check_f2_txt.rgba 64 x 32 RGBA # check1.c
tx_info.rgba 32 x 32 RGBA      # tx_info.h

Note to Wolff: The START textures from endata are also reused here in
jetc*.c files, start1.c, start_eve.c (evening start)