Make memberType less crashy.
Make memberType less crashy.

It's a source of constant peril that sym.tpe on NoSymbol
is fine (it's NoType) but tpe memberType sym on NoSymbol throws
a NSDNHO. The last thing we should be doing is discouraging
people from using memberType in favor of sym.tpe, the latter
being almost always the wrong thing.

martijnhoekstra/scala,lrytz/scala,jvican/scala,scala/scala,slothspot/scala,jvican/scala,scala/scala,shimib/scala,martijnhoekstra/scala,martijnhoekstra/scala,shimib/scala,martijnhoekstra/scala,lrytz/scala,slothspot/scala,shimib/scala,felixmulder/scala,felixmulder/scala,shimib/scala,lrytz/scala,slothspot/scala,martijnhoekstra/scala,jvican/scala,shimib/scala,lrytz/scala,felixmulder/scala,scala/scala,scala/scala,slothspot/scala,lrytz/scala,shimib/scala,martijnhoekstra/scala,jvican/scala,slothspot/scala,scala/scala,lrytz/scala,scala/scala,felixmulder/scala,felixmulder/scala,jvican/scala,felixmulder/scala,slothspot/scala,jvican/scala,jvican/scala,slothspot/scala,felixmulder/scala