Auto resizing ext2/ext3 images (from Poky)

Auto resizing ext2/ext3 images (from Poky)

During my work for OpenedHand I wrote one usefull thing which we used for
ext2/ext3 images - autosizing.

In few words: it checks how big rootfs is, adds IMAGE_EXTRA_SPACE amount
of kilobytes to it and gives that size to genext2fs.