Implemented a types.py module that allows types to be inspected for padding.

The script was able to point out and save 40 bytes in each lldb_private::Section by being very careful where we need to have virtual destructors and also by re-ordering members.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@184364 91177308-0d34-0410-b5e6-96231b3b80d8