Use SDLImage2; update glamour

Rsconscript

@@ -22,7 +22,7 @@ build do
       "modules/gl3n",
       "modules/glamour",
     ]
-    env["DFLAGS"] += ["-fversion=Derelict3", "-fversion=gl3n", "-fversion=SDLImage"]
+    env["DFLAGS"] += ["-fversion=Derelict3", "-fversion=gl3n", "-fversion=SDLImage2"]
     env["LDFLAGS"] += ["-static-libgcc"]
     env.Program("app", sources)
   end