Utility: Close log file before PHYSFS_deinit
Utility: Log prints to stdout too in debug builds
Utility.cpp: Call Log on errors
Utility: Deinit NULL checking
Utility: Deinit always returns BGE_FAILURE
Utility: Deinit called on failed Init
Utility: Update Init documentation
Utility: Don't Log errors before log is opened!
Use Log for error reporting
test/*: Use Log to report errors, etc