Matteo Scaramuccia ef844148a9 MDL-60923 backup: Added $CFG->backuptempdir
The new setting will allow to host the temporary backup files
into a specific target directory. Defaults to '$CFG->tempdir/backup'.

Calling make_backup_temp_directory() checks that the required sub-directory
will be properly created under the new target directory.
2018-04-16 23:50:28 +02:00
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