Reduce Linux box size by not packing a swap partition

* Whiteout swap partition for CentOS, Debian, Fedora, OpenSUSE, Oracle,
  RHEL, SLES, Ubuntu
* FreeBSD has no support for blkid, left it as is
Merge pull request #281 from ceetav/noswap

Reduce Linux box size by not packing a swap partition gubbish
add note in readme about vmware fusion provider
Merge pull request #284 from opscode/nls/vmware-fusion-readme-update

add note in readme about vmware fusion provider
Merge remote-tracking branch 'upstream/master' into mybuntu