php54-memcached: update to 2.2.0, remove outdated patch, require igbinary, add upstream ini defaults, add test, pass `brew audit`
php54-memcached: update to 2.2.0, remove outdated patch, require igbinary, add upstream ini defaults, add test, pass `brew audit`

Closes #1612.

Signed-off-by: Alan Ivey <ee249fd9166eccef852f50ca0cbb6ff8665afe99@gmail.com>

ablyler/homebrew-php,philcook/homebrew-php,TomK/homebrew-php,dguyon/homebrew-php,mkalkbrenner/homebrew-php