emergency fixes: correct name for function upgradedatabase_7_8

(cherry picked from commit 6844f0aeb6bc02fac1a3a263c90ef12d07026176)

Co-authored-by: Vincent Riquer <vincent+prog.atom@riquer.fr>

lib/database/upgradedatabase_7_8

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-upgradedatabase_6_7() {
+upgradedatabase_7_8() {
 	echo "Upgrading database to version 8... (backup is $database.bak_v7)"
         cp "$database" "$database.bak_v7"
         echo 'Deletion of old files was failing. Users of previous versions (YOU!) are strongly advised to run cleandestinations with the "-r" flag.'