Change shadowless rtlights so that they are not occluded by anything - no pvs checks or portal culling.
This makes r_shadow_deferred 0 look the same as r_shadow_deferred 1 - lights fill their whole area if there are no shadows to block them.
This also fixes a popping issue with r_shadow_deferred 1 where the eye was not in a leaf the light considered to be visible, and thus the light was not drawn (which made quite a difference when you move back and forth between leafs that were and were not lit), since when it was drawn it lit everything in the area.
git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@12347
d7cf8633-e32d-0410-b094-
e92efae38249
::stable-branch::merge=
445f3df93c496079a8d74fb3213bad5b5cc277ae