updated for version 7.3.447
Problem:    Win32: External commands with "start" do not work.
Solution:   Unescape part of the command. (Yasuhiro Matsumoto)
diff --git a/src/version.c b/src/version.c
index 159fe86..71231c6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -715,6 +715,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    447,
+/**/
     446,
 /**/
     445,