* Dest/map paths are now set in two steps:
* The filename prefix is set when creating the DevObj()
* The full paths are set when creating the BlockPair()
* Merged dest safety checks into RecoveryState.add_block_pair()
* Mostly check_dest_paths() and dest_safety_check()
* Moved dir RWX checks to is_writable_dir()
* Moved mount RW check to is_writable_filesystem()
* Started merging menu_clone() and menu_image() into menu_ddrescue()
2Shirt
d1eefd05ab
