Rework addition of Symbian splash screen to reduce the source impact (uses SVG from Bug 2414) Notes: by using the OPTION SOURCEDIR parameter in the mifconv extension instructions, I can arrange to use the same source file name in sfimage, without having to export over the original Nokia file. This means that the name inside splashscreen.mbg is the same, which removes the need for the conditional compilation in SplashScreen.cpp, and gets rid of sf_splashscreen.mmp.

/* Generated automatically */
static void printoptionnode _((HashNode hn,int set));
static void setemulate _((HashNode hn,int fully));
static void setoption _((HashNode hn,int value));
static void restrictparam _((char*nam));
static void printoptionnodestate _((HashNode hn,int hadplus));
static void printoptionlist_printoption _((HashNode hn,UNUSED(int ignored)));
static void printoptionlist_printequiv _((int optno));