patch 8.1.1487: older msgfmt cannot generate proper .desktop file

Problem:    Older msgfmt cannot generate proper .desktop file.
Solution:   Add a configure check to not use this msgfmt version. (Ken Takata)
diff --git a/src/version.c b/src/version.c
index bfda618..5ac6f9d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1487,
+/**/
     1486,
 /**/
     1485,