re PR fortran/61933 (Inquire on internal units)

2015-01-14  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/61933
	* io.c (gfc_match_inquire): Generate error if unit number in
	inquire statement is a constant -1.  All other values allowed.
	* trans-io.c (gfc_trans_inquire): Delete dummy iostat variable.
	(create_dummy_iostat): Delete function no longer used.

From-SVN: r219630