www/uwsgi: Use distutils, Add DEBUG option

• Use distutils over Makefile for building
• Allow concurrent (multiple Python version) installation
• Add DEBUG option
• Build verbose by default
• Add support for MAKE_JOBS
• Remove post-patch REINPLACE_CMD (no longer needed)
• Make patches makepatch compatible (portlint)

Approved by: demon (maintainer)
Differential Revision: https://reviews.freebsd.org/D4022