Borg Backup wrapper Version 4.0 update

* file backup borg folder has now -file name inside. Old folder must be
  manuall renamed
* All modules have the module id name as prefix in the backup set,
  _borg_backup_set_prefix_cleanup.sh needs to be run before to clean up
  all names or prune will not correctly delete old entries

New -T for one time target backup with custom prefix to have backups
outside the automated prune. -D option to delete this set

Add borg 1.2 support for compact which is called after delete and prune
to actually clean up the space.

-b borg executable and BORG_EXECUTEABLE override setting if borg is not
in path or another borg executable should be used

borg.backup.functions.close.sh

@@ -2,8 +2,13 @@
 
 # unset borg settings
 unset BORG_BASE_DIR BORG_UNKNOWN_UNENCRYPTED_REPO_ACCESS_IS_OK BORG_RELOCATED_REPO_ACCESS_IS_OK
-DURATION=$[ $(date +'%s')-$START ];
-echo "=== [Run time: $(convert_time ${DURATION})]";
-echo "=== [END  : $(date +'%F %T')] ==[${MODULE}]===================>";
+# error abort without duration and error notice
+if [ $1 == 1 ]; then
+	echo "=== [ERROR: $(date +'%F %T')] ==[${MODULE}]====================================>";
+else
+	DURATION=$[ $(date +'%s')-$START ];
+	echo "=== [Run time: $(convert_time ${DURATION})]";
+	echo "=== [END  : $(date +'%F %T')] ==[${MODULE}]====================================>";
+fi;
 
 # __END__