* parse.y (template_arg): Convert TEMPLATE_DECL

    * parse.y (template_arg): Convert TEMPLATE_DECL
        that is a template template paramter to
        TEMPLATE_TEMPLATE_PARM here.

        * cp-tree.def (TEMPLATE_TEMPLATE_PARM): Adjust comment.
        * cp-tree.h (TEMPLATE_TEMPLATE_PARM_TEMPLATE_DECL): New macro.
        (copy_template_template_parm): Adjust prototype.
        * decl.c (grokdeclarator): Remove dead code.
        * pt.c (process_template_parm): Tidy.
        (lookup_template_class): Construct nodes in
        copy_template_template_parm.
        (tsubst): Pass TEMPLATE_DECL rather than IDENTIFIER_NODE to
        lookup_template_class.  Use TYPE_TI_TEMPLATE.
        * tree.c (copy_template_template_parm): Add NEWARGS
        parameter.
        (mapcar): Adjust call to copy_template_template_parm.
        * typeck.c (comptypes): Use TEMPLATE_TEMPLATE_PARM_TEMPLATE_DECL.
        * method.c (build_template_template_parm_names): Change error
        code to avoid compilation warning.

        * gxxint.texi: Document template template parameter
        name mangling.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@34659 138bc75d-0d04-0410-961f-82ee72b054a4