Root CMakeLists.txt: do not try to find OpenAL if TUNDRA_NO_AUDIO is ON.
Fix VC10 build (include <map>). Make startup option map implementation details private to Framework. Remove unneeded (and suboptimal, QString::loLower is not a free operation) OptionMapCaseInsensitive and replace its usage with already existing QStringLessThanNoCase. Fix couple of QString::compare calls (only 0 means exact match, not values greater than 0). Rename startupMap back to startupOptions (this kind of metadata appended to variable name is not required).