CCharsetConverter: add simpleWToUtf8() for safe convertion on startup/shutdown, add tests for simpleWToUtf8()
CCharsetConverter: add simpleUtf8ToW() for safe convertion on startup/shutdown, add tests for simpleUtf8ToW()
CLog: split Log() function, add LogW() function for wide string logging
CLog: add LogFunction() and LogFunctionW() and macros LogF() and LogFW() for convinent logging with function name
Win32SMBDirectory: use new LogF/LogFW macros
Application.cpp: use new CLog::LogF macro