Adjust default /etc/issue to print 'Welcome to Buildroot' like the
recently removed BR2_BANNER did, and adjust default hostname to be
'buildroot' instead of uclibc as we now support external glibc
toolchains as well.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Mark empty directories in target skeletons with .empty files
and remove them while copying to target (like it's already done for
svn and cvs files) to better support version control system which don't
handle empty directories (E.G. git-svn).
