Added support for MOAI_ENV_devUserName, MOAI_ENV_devManufacturer, and MOAI_ENV_devModel
Turns out trying to use MOAI's TinyXML corrupts the stack! Switched to MXML instead; info.xml now loads (see SledgeCore.cpp for static string arrays holding element -> enum mappings).
Added additional hardware information keys to MOAIEnvironment (desktopRes, screenCount, ramAmount, processorModel, processorFreq, devUsername); not safe to call until the MOAI app window's been opened.