Modified the IRInterpreter to take an IRMemoryMap.
It doesn't use it yet; the next step is to make it
use the IRMemoryMap instead of its own conjured-up
Memory class.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@179650 91177308-0d34-0410-b5e6-96231b3b80d8