Patches needed to build for SYMBIAN32 WINS/GCC added.

Test built for Symbian and run on P910i without any major problems.
Test built for MSVC6. Changed parts seems to compile ok but there are some problems with MSVC6 and some of the targets which the EPOC build does n't support (KYRA,SAGA).

svn-id: r18430

common/system.cpp

@@ -56,6 +56,8 @@ OSystem *OSystem::makeInstance() {
 	return OSystem_PALMOS_create();
 #elif defined(__PLAYSTATION2__)
 	return OSystem_PS2_create();
+#elif defined(__SYMBIAN32__) // SumthinWicked / Sprawl
+	return OSystem_SymbianOS_create();
 #else
 	/* SDL is the default driver for now */
 	return OSystem_SDL_create();