adding memcache and memcached extensions, available in ubuntu/debian repositories
rename php5-apc package name to php-apc to align with upstream available package names
fix for https://github.com/jippi/puppet-php/issues/41
be distro specific with apc package name for ubuntu/debian variants, it looks like most people on centos just use pecl install. relates to https://github.com/jippi/puppet-php/pull/42
Merge pull request #42 from CpuID/master

adding memcache/memcached extensions, rename php5-apc to php-apc to align with debian/ubuntu package names, and fix for PEAR provider installed package version matching