read-rtl.c (md_name): New structure.

read-rtl.c (md_name): New structure.

gcc/
	* read-rtl.c (md_name): New structure.
	(read_name): Take an md_name instead of a buffer pointer.
	Use the "string" field instead of strcpy when expanding constants.
	(read_constants): Remove the tmp_char argument.  Update the calls
	to read_name, using two local name buffers instead of the tmp_char
	argument.  Merge the constant-creation code.
	(read_conditions): Remove the tmp_char argument.  Update the calls
	to read_name, using a local name buffer instead of the tmp_char
	argument.
	(read_mapping): Replace tmp_char variable with a local name buffer.
	Update the calls to read_name.
	(read_rtx_1): Likewise.  Update the calls to read_constants and
	read_conditions.

From-SVN: r160574