[M3commit] [modula3/cm3] 13dfdc: Remake PKGS if it is older than pkginfo.txt.

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/modula3/cm3
  Commit: 13dfdcc213c3aa5bafa7c29899c961965c226219
      https://github.com/modula3/cm3/commit/13dfdcc213c3aa5bafa7c29899c961965c226219
  Author: Jay Krell <jay.krell at cornell.edu>
  Date:   2016-01-02 (Sat, 02 Jan 2016)

  Changed paths:
    M scripts/python/pylib.py

  Log Message:
  -----------
  Remake PKGS if it is older than pkginfo.txt.
Ideally this would be some sort of hash check, but that requires
udpating all the readers (i.e. the Bourne shell scripts and maybe cmd).