The files are executables of glotex and idxtex for msdos on 386.

They have been compiled by djgcc 1.10c .
Run the programs by:
  1. move the DOS-extender go32.exe to a directory present in PATH.
     run (glo|idx)tex.exe
  2. create self-running executables by:
       copy go32.exe+glotex.exe glotex_autark.exe /b
       copy go32.exe+idxtex.exe idxtex_autark.exe /b
     run (glo|idx)tex_autark.exe