updated for version 7.4.349

Problem:    When there are matches to highlight the whole window is redrawn,
            which is slow.
Solution:   Only redraw everything when lines were inserted or deleted.
            Reset b_mod_xlines when needed.  (Alexey Radkov)

src/version.c

@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    349,
 /**/
     348,
 /**/