Backup files. Separate Folder

[farrel]

I'd suggest to create the ability to define path for storing backup files.
By default, backup files are generated in the same folder. Imagine 10 files and subroutines in the same folder. +10 more files flood the folder. It's a mess. But still I want to preserve backups, from accident disappearance.
I'd appreciate to create subfolder "backup" and would define to store all backup files there. It would allow me to keep my modelling folder clean and neat.

Thank you