egcs, patches to system.h

[Jeffrey A Law]

  In message < 199802131937.OAA12067@caip.rutgers.edu >you write:
  > Fri Feb 13 14:01:36 1998  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
  >  
  >         * system.h: Fix return type of bcmp prototype from `void' to `int'.
  > 	Make bcopy, bcmp and bzero prototypes explicitly `extern'.
  > 	Add a prototype for getenv.
Thanks.  Installed.
jeff