Added support for Cloudflare and multi domain support for namecheap

As featured at: https://support.cloudflare.com/hc/en-us/articles/200168816-Does-CloudFlare-work-with-Dynamic-DNS-Can-I-update-my-DNS-records-remotely-

Namecheap improvements: https://robertianhawdon.me.uk/2010/09/03/making-ddclient-work-with-multiple-domains-on-namecheap/
I have a sneaking suspicion that you're running this on an Enterprise Linux 6.X box (CentOS or RHEL). These ship with Perl 5.10.

I've been able to replicate the issue with on CentOS 6.5 with this version, and as stated in the documentation, ddclient now requires Perl 5.14 or above. Upon upgrading, ddclient works as expected.

Cheers