These are alternative ekg2 snapshots provided by ekg2 developer
Michał Górny.
They differ from official ones in following ways:
They're generated at 3 AM, instead of midnight — so it's less
possible that anyone was still breaking trunk when snapshot was
generated;
Autotools 'make dist' isn't used for their generation — so even if
EXTRA_DIST is broken, they're still generated;
They contain more files than autotools packages — including
SCons;
They are compressed using .bz2 and .lzma instead of poor .gz;
They come in two variants — one with pregenerated autotools
buildsystem, and other with autotools removed — so that SCons users
wouldn't have to download half a meg of autotools junk.