undocument argument of CompareString

// Undocumented
#define NORM_STOP_ON_NULL 0x10000000

// Documented
#define NORM_IGNORECASE 0x00000001 /* ignore case */
#define NORM_IGNORENONSPACE 0x00000002 /* ignore diacritics */
#define NORM_IGNORESYMBOLS 0x00000004 /* ignore symbols */

#if defined (_WIN32) /* from winnls.h */
#define NORM_IGNOREKANATYPE 0x00010000 /* ignore kanatype */
#define NORM_IGNOREWIDTH 0x00020000 /* ignore width */
#elif defined (WIN16) /* from olenls.h */
#define NORM_IGNOREWIDTH 0x00000008 /* ignore width */
#define NORM_IGNOREKANATYPE 0x00000040 /* ignore kanatype */
#endif

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