trans.h (gfc_string_to_single_character): New prototype.

trans.h (gfc_string_to_single_character): New prototype.

	* trans.h (gfc_string_to_single_character): New prototype.
	* trans-expr.c (string_to_single_character): Renamed to ...
	(gfc_string_to_single_character): ... this.  No longer static.
	(gfc_conv_scalar_char_value, gfc_build_compare_string,
	gfc_trans_string_copy): Adjust callers.
	* config-lang.in (gtfiles): Add fortran/trans-stmt.c.
	* trans-stmt.c: Include ggc.h and gt-fortran-trans-stmt.h.
	(select_struct): Move to toplevel, add GTY(()).
	(gfc_trans_character_select): Optimize SELECT CASE
	with character length 1.

	* gfortran.dg/select_char_2.f90: New test.

From-SVN: r162226