MSVC x64: Compilation issues with current head and LLVM 3.5 final

[Trass3r via digitalmars-d-ldc]

Be brave, building with msvc is still a bumpy road.
First of all the pdata problem is fixed in llvm head.
Doesn't necessarily mean the unwind tables are really correct now 
(https://github.com/ldc-developers/ldc/issues/166#issuecomment-54522891). 
But people seem to prefer discussing warning flags at great 
length.

There are more issues you may encounter, for some I use some 
local hacks.
Need to create some tickets for them.

Never seen those linker errors though.
Only some about *ObjC* functions in llvm.