scons: change md5sum to new release

The developers of scons found a bug in the packaging of their release 
and just replaced the already released version with a new one without 
changing the version number. This breaks the download script because it 
also has a new md5sum.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@46175 3c298f89-4303-0410-b956-a3cf2f4a3e73