* Removed SMMU "start on first new map" feature, which was unreliable clutter at best
* Restore support for maps with zero nodes, which was broken by Lee Killough at some point...

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2732 86ba831e-150c-0410-ab35-e06eaae15ed9
* Support for TX_START/TX_END namespace in .wad and textures/ folder in .pke
* Support for textures defined through ns_textures in the renderer.
* Translate some linear lumps into patches in PatchLoader::verifyData, based on size (hold-me-over til new unified image system gets put in).

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2736 86ba831e-150c-0410-ab35-e06eaae15ed9