Roll libxslt to 891681e3e948f31732229f53cb6db7215f740fc7

third_party/libxslt/libxslt/win32config.h

Index: third_party/libxslt/libxslt/win32config.h
diff --git a/third_party/libxslt/libxslt/win32config.h b/third_party/libxslt/libxslt/win32config.h
index 9f60e55ca42b12a7e5c4a64884e6d6badd4300a8..8fe704275a35c5329c062aca515a8be2b4b02750 100644
--- a/third_party/libxslt/libxslt/win32config.h
+++ b/third_party/libxslt/libxslt/win32config.h
@@ -77,13 +77,41 @@ static int isnan (double d) {
 #endif /* _MSC_VER */
 
 #include <direct.h>
-#if defined(_MSC_VER) || defined(__MINGW32__)
-#define mkdir(p,m) _mkdir(p)
-#define snprintf _snprintf
-#if _MSC_VER < 1500
-#define vsnprintf(b,c,f,a) _vsnprintf(b,c,f,a)
-#endif
-#endif
+
+/* snprintf emulation taken from http://stackoverflow.com/a/8712996/1956010 */
+#if defined(_MSC_VER) && _MSC_VER < 1900
+
+#include <stdarg.h>
+#include <stdio.h>
+
+#define snprintf c99_snprintf
+#define vsnprintf c99_vsnprintf
+
+__inline int c99_vsnprintf(char *outBuf, size_t size, const char *format, va_list ap)
+{
+    int count = -1;
+
+    if (size != 0)
+        count = _vsnprintf_s(outBuf, size, _TRUNCATE, format, ap);
+    if (count == -1)
+        count = _vscprintf(format, ap);
+
+    return count;
+}
+
+__inline int c99_snprintf(char *outBuf, size_t size, const char *format, ...)
+{
+    int count;
+    va_list ap;
+
+    va_start(ap, format);
+    count = c99_vsnprintf(outBuf, size, format, ap);
+    va_end(ap);
+
+    return count;
+}
+
+#endif /* defined(_MSC_VER) && _MSC_VER < 1900 */
 
 #define HAVE_SYS_STAT_H
 #define HAVE__STAT