Fix PR c++/47311

Fix PR c++/47311

gcc/cp/

	PR c++/47311
	* cp-tree.h (fixup_template_parms): Declare.
	* pt.c (end_template_parm_list): Do not fixup template parms here.
	(fixup_template_parms): Remove static. Fix typo in the
	comments. Remove useless code statement.
	(fixup_template_parm): For a template template parameter, fixup
	its attributes before fixing up its type.
	* parser.c
	(cp_parser_template_declaration_after_export): After parsing
	template parameters fixup their types.

gcc/testsuite/

	PR c++/47311
	* g++.dg/template/param2.C: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@169377 138bc75d-0d04-0410-961f-82ee72b054a4