MFH: r489686 r494706

net-im/py-slixmpp: Add missing RUN_DEPENDS and fix some other issues

• Switch MASTER_SITES to CHEESESHOP as it ought to be the default for Python software.
• Adjust COMMENT to match the short description from setup.py.
• Add missing RUN_DEPENDS.
• Standardize test invocation.
• Update WWW to point to project's homepage instead of the Git repository.

Reported by: koobs
Reviewed by: koobs, krion
Approved by: koobs, krion (mentor)
Differential Revision: https://reviews.freebsd.org/D18684

net-im/py-slixmpp: Update to 1.4.2

This release contains a fix for CVE-2019-1000021.

Changelog:
https://lab.louiz.org/poezio/slixmpp/tags/slix-1.4.2

Reviewed by: krion
Approved by: krion (mentor)
Security: 526d9642-3ae7-11e9-a669-8c164582fbac
Security: CVE-2019-1000021
Differential Revision: https://reviews.freebsd.org/D19397

Approved by: ports-secteam (joneum), krion (mentor, implicit)