Two critical updates:
* Crash in EHashTable::objectForKey during metakey interning; undefined behavior invoked by moving DLListItem in memory... can't use PODCollection on objects with self-referential pointers, yet. ::sigh::
* printz's Gungnir regression in translation handling - R_InitTranslationTables isn't called until after EDF processing, so, R_TranslationNumForName needs to get the namespace_t for ns_translations and use its firstLump field directly.

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2548 86ba831e-150c-0410-ab35-e06eaae15ed9
* A few comment corrections and dead code removals
* Force audio_buffers to be a power of two
* Add i_directory.cpp/.h to 2010 project and fix #include error.

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2549 86ba831e-150c-0410-ab35-e06eaae15ed9