databases/py-carbon: Update to 1.1.7

• Enable build for all Python versions.

• Pet portlint (sort variables, rebase patch) and make USES block separate from non-relevant variables while I'm here.

Changelogs since 1.1.5:

https://graphite.readthedocs.io/en/latest/releases/1_1_7.html
https://graphite.readthedocs.io/en/latest/releases/1_1_6.html

PR: 245859
Approved by: maintainer timeout (6+ weeks)