reload1.c (eliminate_regs, case MINUS): Canonicalize (minus (plus reg const) reg) to (plus (minus reg reg) const).

	* reload1.c (eliminate_regs, case MINUS): Canonicalize
	(minus (plus reg const) reg) to (plus (minus reg reg) const).
	* reload.c (find_reloads_address): Treat (plus (minus reg reg) const)
	the same as (plus (plus reg reg) const).

From-SVN: r13539