py-pip: updated to 10.0.0

10.0.0:

Bug Fixes
- Prevent false-positive installation warnings due to incomplete name
  normalizaton.
- Fix issue where installing from Git with a short SHA would fail.
- Accept pre-release versions when checking for conflicts with pip check or pip
  install.
- ``ioctl(fd, termios.TIOCGWINSZ, ...)`` needs 8 bytes of data
- Do not warn about script location when installing to the directory containing
  sys.executable. This is the case when 'pip install'ing without activating a
  virtualenv.
- Fix PEP 518 support.
- Don't warn about script locations if ``--target`` is specified.

(adam)