clean up stb_sprintf; implementation of fprintf et al, remove

05/string.h

@@ -0,0 +1,14 @@
+#ifndef _STRING_H
+#define _STRING_H
+
+#include <stdc_common.h>
+
+void *memset(void *s, int c, size_t n) {
+	char *p = s, *end = p + n;
+	while (p < end)
+		*p++ = c;
+	return s;
+}
+
+
+#endif // _STRING_H