When attempting to print function names with arguments in frame formatting, attempt to detect templated functions, and replace the argument list with values outside the template marking. Turns C::f<(this=0x00007fff5fbffb70, x=2, y=1)0>(int, int) into C::f<(C::V)0>(this=0x00007fff5fbffb70, x=2, y=1), which definitely looks more like the real thing. Fixes rdar://14882237