MANIFEST update
FreeBSD-kvm: additional fields:
* size (alias for vmsize)
* rss (like rssize, but in bytes, not in pages)
* majflt, minflt, cmajflt, cminflt (like in the linux implementation)
* ctime, cutime, cstime (like in the linux implementation)
* numthr, onpro (like in the solaris implementation)
FreeBSD-kvm: implementation for "groups" field
FreeBSD-kvm: oncpu is now undef instead of 255
FreeBSD-kvm: update of README.freebsd-kvm for new fields