Bump copyright year
Merge branch '3.7' into 3.8
Merge branch '3.8'
Make the PEAR package a "wrapper" for the PHAR.

This means that dependencies of PHPUnit do not have to support the PEAR Installer anymore.
Leftover from 205e00844d1d9cf4cd4545c4cc45f1121a6b0824
Merge branch '3.7' into 3.8
Merge branch '3.8'