Apart from getting the things compiled the following was changed:

twm.c:

- call to fcntl() was removed
- add call to vms_do_init() inserted into main()

lex.c:

- the way yyinput and yyoutput are initialized is changed (vms_do_init())


Xmu/CloseHook.c:

- in _MakeExtension all code removed (where is XAddExtension() ??)