Patch to accept over-qualified constructor in MSVC emulation mode

[Dmitri Gribenko]

On Wed, Feb 6, 2013 at 11:19 PM, Jason Haslam <jason.haslam at gmail.com> wrote:
> MSVC accepts this:
>
> class A {
>   A::A();
> };
>
> Clang accepts regular member functions with extra qualification as an MS extension, but not constructors.

Please also add a test that checks that we don't accept this in
non-msext mode.  It should probably go into
test/CXX/class/class.ctor/p1.cpp.

Dmitri

-- 
main(i,j){for(i=2;;i++){for(j=2;j<i;j++){if(!(i%j)){j=0;break;}}if
(j){printf("%d\n",i);}}} /*Dmitri Gribenko <gribozavr at gmail.com>*/