patch 7.4.1073
Problem:    Alloc_id depends on numbers, may use the same one twice.  It's not
            clear from the number what it's for.
Solution:   Use an enum.  Add a function to lookup the enum value from the
            name.
diff --git a/src/version.c b/src/version.c
index ad87d1d..46e5aa7 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1073,
+/**/
     1072,
 /**/
     1071,