message: Find relative drake libraries from `drake` executable.
diff: #!/usr/bin/env python3
  -import drake
  +import os
  import sys
  +root = os.path.dirname(os.path.dirname(__file__))
  +sys.path.insert(0, root)
  +
  +import drake
  +
  path = '.'
  if len(sys.argv) > 1:
  path = sys.argv[1]
  