patch 8.1.1240: runtime desktop files are overwritten by build

Problem:    Runtime desktop files are overwritten by build. (Tony Mechelynck)
Solution:   Instead of copying the files find them with "make install".
diff --git a/src/version.c b/src/version.c
index 29a1f03..5c6e506 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1240,
+/**/
     1239,
 /**/
     1238,