typedef-named class member functions can be public

[Alexandre Oliva]

A class defined like this:

typedef class {...} foo;

has linkage, but its member functions don't have the public flag set,
even when they're defined outside the class body.  The problem appears
to be that duplicate_decls() just copies TREE_PUBLIC (olddecl) to the
new decl, so the public flag set in new decl is lost.  Oops.

This patch fixes the problem.  I can't include the testcase I was
given because it's derived from a proprietary testsuite, so I'd
appreciate if someone would come up with a testcase based on my
description of the problem for the GCC testsuite.  Thanks in advance.

This patch was tested on athlon-pc-linux-gnu-x-mn10300-elf.  Ok to
install?

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-- 
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                  aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist                Professional serial bug killer