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i386 performance problem due to local-alloc.c change


I seem to be seeing around a 10 percent performance hit when
running the crafty chess benchmark and the Brl-Cad raytracing
benchmarks on an Intel Pentium II with:

Tue Jun  9 12:36:16 1998  Jeffrey A Law  (law@cygnus.com)

	* Makefile.in (local-alloc.o): Depend on insn-attr.h.
	* local-alloc.c (block_alloc): Avoid creating false 
	dependencies for targets which use instruction scheduling.

installed.  If I remove this patch then life gets better (not to
mention faster :-).

-- John
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