patch 8.0.0173: build fails with EBCDIC defined

Problem:    When compiling with EBCDIC defined the build fails. (Yaroslav
            Kuzmin)
Solution:   Move sortFunctions() to the right file.  Avoid warning for
            redefining __SUSV3.
diff --git a/src/version.c b/src/version.c
index a6bbf1b..638e350 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    173,
+/**/
     172,
 /**/
     171,