WinRT: fixed bug whereby SDL would override an app's default orientation

WinRT apps can set a default, preferred orientation via a .appxmanifest file.
SDL was overriding this on app startup, and making the app use all possible
orientations (landscape and portrait).

Thanks to Eric Wing for the heads up on this!

Xcode-iOS/Demos/src/common.c

@@ -0,0 +1,36 @@
+/*
+ *  common.c
+ *  written by Holmes Futrell
+ *  use however you want
+ */
+
+#include "common.h"
+#include "SDL.h"
+#include <stdlib.h>
+
+/*
+    Produces a random int x, min <= x <= max
+    following a uniform distribution
+*/
+int
+randomInt(int min, int max)
+{
+    return min + rand() % (max - min + 1);
+}
+
+/*
+    Produces a random float x, min <= x <= max
+    following a uniform distribution
+ */
+float
+randomFloat(float min, float max)
+{
+    return rand() / (float) RAND_MAX *(max - min) + min;
+}
+
+void
+fatalError(const char *string)
+{
+    printf("%s: %s\n", string, SDL_GetError());
+    exit(1);
+}