Implement N4051 - Allow typename in a template template parameter

Implement N4051 - Allow typename in a template template parameter

cp/

2014-07-25  Edward Smith-Rowland  <3dw4rd@verizon.net>

	Implement N4051 - Allow typename in a template template parameter
	* parser.c (cp_parser_type_parameter_key): New funtion;
	(cp_parser_token_is_type_parameter_key): Ditto;
	(cp_parser_type_parameter): Look for type-parameter-key for all versions
	but pedwarn for less than cxx1z.

testsuite/

2014-07-25  Edward Smith-Rowland  <3dw4rd@verizon.net>

	Implement N4051 - Allow typename in a template template parameter
	* lib/target-supports.exp (check_effective_target_c++1y): Now
	means C++1y and up.
	(check_effective_target_c++1y_down): New.
	(check_effective_target_c++1z_only): New.
	(check_effective_target_c++1z): New.
	* g++.dg/cpp1z/typename-tmpl-tmpl-parm.C: New.
	* g++.dg/cpp1z/typename-tmpl-tmpl-parm-neg.C: New.
	* g++.dg/cpp1z/typename-tmpl-tmpl-parm-.C: New.

From-SVN: r213065