Issuing a "type category disable *" command followed by a "type category enable *" command does not honor the order in which categories were previously enabled
While we didn't really promise it would, it seems like it should

This checkin enables just that, and fixes rdar://18527468



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@218949 91177308-0d34-0410-b5e6-96231b3b80d8