ffmpeg roll of source to mar 9 version...

patched-ffmpeg-mt/libavutil/avstring.c

 /*
  * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
  * Copyright (c) 2007 Mans Rullgard
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
@@ skipping 30 matching lines @@
 {
     while (*pfx && toupper((unsigned)*pfx) == toupper((unsigned)*str)) {
         pfx++;
         str++;
     }
     if (!*pfx && ptr)
         *ptr = str;
     return !*pfx;
 }
 
+char *av_stristr(const char *s1, const char *s2)
+{
+    if (!*s2)
+        return s1;
+
+    do {
+        if (av_stristart(s1, s2, NULL))
+            return s1;
+    } while (*s1++);
+
+    return NULL;
+}
+
 size_t av_strlcpy(char *dst, const char *src, size_t size)
 {
     size_t len = 0;
     while (++len < size && *src)
         *dst++ = *src++;
     if (len <= size)
         *dst = 0;
     return len + strlen(src) - 1;
 }
 
@@ skipping 16 matching lines @@
 
     return len;
 }
 
 char *av_d2str(double d)
 {
     char *str= av_malloc(16);
     if(str) snprintf(str, 16, "%f", d);
     return str;
 }