re PR target/18329 (mmix-knuth-mmixware testsuite failure: execute/920501-7.c, execute/comp-goto-2.c)

	PR target/18329
	PR target/18330
	* reload1.c (delete_output_reload): Don't delete an output reload
	if the pseudo lives longer than a single basic block.  Adjust and
	improve wording of comment.

From-SVN: r93250