* Add fat filesystem support
fatresize is temporarily disabled
* Refactor Filesystem.get_dev_size
For more sharing with vFAT class
* Fix filesystem tests on some OSs
I think this is due to older mke2fs on those systems.
* Fix vFAT command on FreeBSD
newfs doesn't seem to work on image files
* Refactor filesystem.grow()
Split out grow_cmd generation and Device operations
* Use swap as unsupported filesystem
Except FreeBSD, which doesn't have mkswap
* Be consistent about str(dev) vs dev.path
Prefer str(dev), this works transparently with '%s' formatting.
* Enable vfat resize, only test fatresize >= 1.0.4
Lower versions have a segfault bug.
* Only install fatresize where available
FreeBSD, OpenSUSE, RHEL and CentOS < 7 don't ship it.
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