Fixed Makefile-based install to place python packages in the LLDB install tree.
Failure to install python packages now fails the make install.
This patch properly handles the optional DESTDIR variable.

Patch by Todd Fiala



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@196624 91177308-0d34-0410-b5e6-96231b3b80d8
Replace the last auto_ptr by unique_ptr



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@196625 91177308-0d34-0410-b5e6-96231b3b80d8