Show Atmel mirrors together with the other mirrors, instead of hiding
them in yet another sub-menu.
At the same time, add an empty line before the Atmel include as noticed
by Hartley Sweeten.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This is the long requested backup mirror support. So far only enabled
for Makefile.autotools.in, but there's no reason why we cannot use
DOWNLOAD everywhere.
Notice, I'm still syncing http://buildroot.uclibc.org/downloads/sources/
