Fix logging messages, add guaranteed logging and throw for fatal errors

[uniflare]

!B (Logging) Repair log messages not showing the actual message and fix-up newlines

• Add LOG_G for guaranteed logging via stderr on Linux, or OutputDebugString on Windows
• Prevent infinite loop by using LOG_G during storage init (used to find a suitable log file location)
• Throw runtime_error for fatal errors (prevents extension loading in an incorrect state)

I didn't take care with the logging changes, it fixed the error, however i neglected the argument changes so the actual message from the call-site is never printed :/. Couple extras also.