updating sconscript and sconstruct to use the new system.
Updating debian rules to work with new scons system.
updating site_scons to the correct commit.
Merge remote-tracking branch 'origin/sf-50-RepG' into improve_scons_a

Conflicts:
	debian/rules
Standardizing all the sconstructs.
Updating site_scons ref
"updating submodule ref"