wget2nand didnt check the exit status after copying the kernel, if the
copying failed for some reason ( for example not enougs space on the
kernel partition) it simply continued extracting the rootfs.
I also changed the filename, which wget2nand trys to download (
.tar.gz instead of .tgz ).
Signed-off-by: Marko Foerster <mrkfoerster@googlemail.com>
SVN-Revision: 21444
