[all-commits] [llvm/llvm-project] 7c8fa9: lldb: use the newer `find_package` if available

[Saleem Abdulrasool via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 7c8fa95395e719f9a2c211ee0f574ac9ef88a19d
      https://github.com/llvm/llvm-project/commit/7c8fa95395e719f9a2c211ee0f574ac9ef88a19d
  Author: Saleem Abdulrasool <compnerd at compnerd.org>
  Date:   2020-04-29 (Wed, 29 Apr 2020)

  Changed paths:
    M lldb/cmake/modules/FindPythonInterpAndLibs.cmake

  Log Message:
  -----------
  lldb: use the newer `find_package` if available

Now that the rest of LLVM prefers python3 over python2, the LLDB path
should follow suite.  Add a fallback path to python2 for non-Windows
targets.