[PATCH] unique_ptrify llvm::getLazyBitcodeModule's MemoryBuffer parameter

[Rafael Ávila de Espíndola]

I am somewhat OK with this approach. I think the one item I feel
should be done differently is llvm::parseBitcodeFile. It can take just
a stringref and build a fake membuf to pass down.  Maybe we should do
that first (attached patch)?

- {F130689, layout=link}

http://reviews.llvm.org/D4876