switch multiple php versions

remi alternate php handler for roundcube

enable additional php

1. roundcube-rcguard
   should be renamed to rcguard
   
   mysql -u root -p
USE roundcubedb;
CREATE TABLE IF NOT EXISTS `rcguard` (
    ->   `ip` VARCHAR(40) NOT NULL,
    ->   `first` DATETIME NOT NULL,
    ->   `last` DATETIME NOT NULL,
    ->   `hits` INT(10) NOT NULL,
    ->   PRIMARY KEY (`ip`),
    ->   INDEX `last_index` (`last`),
    ->   INDEX `hits_index` (`hits`)
    -> ) ENGINE = InnoDB CHARACTER SET utf8 COLLATE utf8_general_ci;