egcs, patch for gcc.c to utilize system.h

[Jeffrey A Law]

  In message < 199802131938.OAA12148@caip.rutgers.edu >you write:
  > Fri Feb 13 14:02:36 1998  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
  >  
  >         * gcc.c: Get system includes, prototypes and macros via "system.h"
  >         instead of doing it manually.  Change all calls of the ctype
  >         macros to custom versions defined in "system.h".
Thanks.  Installed.

jeff