mysqlnd-ms 1.4.2 from PECL

The master/slave plugin for mysqlnd from PECL

Corrected errors in the formula

Lacked init and safe_phpize

php53-mysqlnd_ms: Added for PHP 5.3
Merge branch 'php53-mysqlnd_ms' of https://github.com/EirikWulff/homebrew-php into php53-mysqlnd_ms