Add Python 3.6 and 3.7 to the version list
Add Python 3.6 and 3.7 to the version list

Python 3.6 and 3.7 have been released.

Differential Revision: https://reviews.llvm.org/D64444

Patch from Christian Biesinger <cbiesinger@google.com>!

git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@365688 91177308-0d34-0410-b5e6-96231b3b80d8

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