Update g4wihelp for newer Unicode mingw api
* src/exdll.h: Update with code from current NSIS * src/desktopshellrun.cpp: Use _UNICODE * src/g4wihelp.c (runonce) Change to wchar result. (playsound, stopsound, splash_wndproc, showsplash) (service_error, service_create, service_lookup) (service_query, service_start, service_stop, service_delete)
This is not yet complete some functions need to be changed from
char * to TCHAR.