Watch out for compilers that generate bad bitfield info. If the bit size of a...

Watch out for compilers that generate bad bitfield info. If the bit size of a bitfield member doesn't lie within the bit bounds of the type itself, just leave it out so we don't get clang asserting and killing our IDE when it gets unhappy with the information.

https://llvm.org/bugs/show_bug.cgi?id=27515
<rdar://problem/21082998>

llvm-svn: 268110