[Blueprint swapfile-in-the-installer] Support Swapfiles at Installation

[tz]

Blueprint changed by tz:

Whiteboard changed to:

One common item is a multiboot setup.  If this were implemented, and it
would do a mkswap for official swapfiles when activating them, I could
share large, contiguous files (e.g. windows PAGEFILE.SYS) among the
systems instead of having several large files, one for each OS.

If in the installer, there is a partition going to be mounted, allow the
user to select a file.  As a post-install, add a swapfile manager where
files can be selected, created, or removed.

-- 
  Support Swapfiles at Installation
  https://blueprints.launchpad.net/ubuntu/+spec/swapfile-in-the-installer