patch 7.4.1729
Problem:    The Perl interface cannot use 'print' operator for writing
            directly in standard IO.
Solution:   Add a minimal implementation of PerlIO Layer feature and try to
            use it for STDOUT/STDERR. (Damien)
diff --git a/src/version.c b/src/version.c
index a8556a8..2683123 100644
--- a/src/version.c
+++ b/src/version.c
@@ -749,6 +749,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1729,
+/**/
     1728,
 /**/
     1727,