Make Python version setting actually effective
Make Python version setting actually effective

This needs to be outside the if to actually work. Also, this adjusts the
list of versions to match LLVM.

Patch by: Christian Biesinger

Differential revision: https://reviews.llvm.org/D64578

git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@365988 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lldb,llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb