Remove curl from CentOS boxes from here on in.
Related to #280.
Moved CentOS 6.5 boxes to OLD-BOXES and added CentOS 6.6 boxes.
Added Parallels support to OmniOS template
Added Parallels support to FreeBSD templates
Added "builds/parallels" directory
Merge pull request #278 from legal90/parallels-improve

Parallels: Support of FreeBSD and OmniOS. Some fixes
Update travis to use newest Packer
Updated solaris 10 defs for u5 and u11