Add a new setting (currently fixed) for how to
interpret core files that contain both a user
process dyld and a kernel executable in them.
Fix an additional method that needs to be 
adjusted depending on this preference as well.
<rdar://problem/15721409> 


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@197931 91177308-0d34-0410-b5e6-96231b3b80d8