patch 8.2.4793: recognizing Maxima filetype even though it might be another

Problem:    Recognizing Maxima filetype even though it might be another.
Solution:   Remove *.mc and *.dem patterns from Maxima files
diff --git a/src/version.c b/src/version.c
index 82d10a2..901df55 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4793,
+/**/
     4792,
 /**/
     4791,