FMSLogo Code

This was never used by fmslogo.cpp and is used by logodialogboxes.cpp, so it makes more sense to define it there. However, the real motiviation is to fix a bug in the screensaver which re-defined it as char[] instead of wchar_t[] (a regression introduced when porting FMSLogo to use Unicode). By moving it to logodialogboxes.cpp, the screensaver and the main environment can use the same definition.