updated for version 7.3.446

Problem:    Win32: External commands with special characters don't work.
Solution:   Add the 'shellxescape' option.

src/version.c

@@ -714,6 +714,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    446,
 /**/
     445,
 /**/