Make's MAKEFLAGS variable is set to a string containing the single-letter arguments to Make. This means there are no hyphens. Fix the '-s' check to silence distutils to now work.
Make's MAKEFLAGS variable is set to a string containing the single-letter
arguments to Make. This means there are no hyphens. Fix the '-s' check to
silence distutils to now work.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator