Hermes: fix for ia64

[Marcel Moolenaar]

Gang,

Attached the necessary configure fodder to get Hermes to build on
ia64. There are a lot of *very* suspicious compiler warnings:

c_genrc_ao_blit.c:96: warning: cast from pointer to integer of different size
c_genrc_ao_blit.c:96: warning: cast to pointer from integer of different size

On ia64 this is often enough fatal. I don't worry about that now.

FYI,

-- 
 Marcel Moolenaar	  USPA: A-39004		 marcel at xcllnt.net