egcs, haifa-sched.c warning fixes

[Jeffrey A Law]

  In message < 199802171748.MAA28345@caip.rutgers.edu >you write:
  > Mon Feb 16 15:21:54 1998  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
  > 
  >         * haifa-sched.c: Include "system.h" to get <stdlib.h> and <stdio.h>.
  >         (BLOCKAGE_RANGE): Add parentheses around arithmetic in operand of |.
  >         (sched_note_set): Remove unused parameter `b', all callers changed.
  >         (schedule_block): Likewise for `rgn'.
  >         (split_hard_reg_notes): Likewise for `orig_insn'.
  >         (check_live): Likewise for `trg'.
  >         (update_live): Likewise.
  >         (check_live_1): Explcitly declare variable `i' as int.
  >         (update_live_1): Likewise.
  >         (insn_issue_delay): Remove unused variable `link'.
  >         (sched_analyze_2): Add default case in enumeration switch.
  >         (schedule_insns): Remove unused variable `i'.
  > 
  > 	* Makefile.in ($(SCHED_PREFIX)sched.o): Depend on system.h.
Thanks.  Installed.

jeff