devel/pear-PHP_CodeCoverage: Update from 1.2.7 to 5.2.2

[joneum]

Summary

devel/pear-PHP_CodeCoverage: Update from 1.2.7 to 5.2.2

Unbreak this port

switch to GitHub

While here switch to DISTVERSION

Changelogs: https://github.com/sebastianbergmann/php-code-coverage

Test Plan

devel/pear-PHP_CodeCoverage: portlint -AC [15:00:24]
WARN: Makefile: for new port, make $FreeBSD$ tag in comment section empty, to make SVN happy.
0 fatal errors and 1 warning found.

poudriere testport:

10.3-amd64
10.3-i386
11.1-amd64
11.1-i386
12.0-CURRENT r323123 amd64
12.0-CURRENT r323123 i386