Don't crash when we build with python enabled, yet we don't link in the lldb::SB* API layer. 

Previously the lldb-platform and lldb-gdbserver would crash.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@201872 91177308-0d34-0410-b5e6-96231b3b80d8