<rdar://problem/14496092>

Fixed the expression parser to be able to iterate across all function name matches that it finds when it is looking for the address of a function that the IR is looking for. Also taught it to deal with reexported symbols.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@193716 91177308-0d34-0410-b5e6-96231b3b80d8