PATCH RFA: Bring demangler patch over to 2.21 branch

[Ian Lance Taylor]

I would like to bring this patch over from mainline to the 2.21 branch,
to fix a demangler bug described at http://gcc.gnu.org/PR46332 .

OK for the branch?

Ian


2010-11-12  Ian Lance Taylor  <iant@google.com>

	PR other/46332
	* cp-demangle.c (d_print_function_type): Don't print parentheses
	if there are no modifiers to print.
	* testsuite/demangle-expected: Tweak one test case, add another.


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