c-objc-common.c (): Fix a typo in a warning.

	* c-objc-common.c (): Fix a typo in a warning.
	* cse.c (preferrable): Change to preferable. Update all of its
	callers.
	* genautomata.c (ainsn): Change
	first_ainsn_with_given_equialence_num to
	first_ainsn_with_given_equivalence_num.  Update all of its
	references.

From-SVN: r77497