Switch over to use the ArchSpec::GetMachine() instead of ArchSpec::GetCore() to keep the code more portable as we add new core types to ArchSpec.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@204400 91177308-0d34-0410-b5e6-96231b3b80d8
Fixed case typo.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@204402 91177308-0d34-0410-b5e6-96231b3b80d8