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	name case.  Don't re-add substitutions as candidates.
	(demangle_nested_name): Use <unqualified-name>.
	(demangle_prefix): Likewise.  Don't add template names as
	substitution candidates twice, or re-add a substitution or the
	last prefix component.
	(demangle_local_name): Adjust output format.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@36014 138bc75d-0d04-0410-961f-82ee72b054a4