Settings: Mark termination enables as an unaligned ptr

Unfortunately, the termination enables are not always at an aligned
boundary, and MSVC needs to taint the ptr type with __unaligned
in that case.

include/icsneo/platform/unaligned.h

@@ -0,0 +1,10 @@
+#ifndef __UNALIGNED_H_
+#define __UNALIGNED_H_
+
+#if defined(MSVC)
+#define ICSNEO_UNALIGNED(x) __unaligned x
+#else
+#define ICSNEO_UNALIGNED(x) x
+#endif
+
+#endif