Disable virtualclean in semplice-base.
modules/partdisks: Added "support"(workaround) for the "root" seed.

FIXME: This workaround is to get the root overriden via
a seed. This is extremly useful for those who need to install the
distribution to a partition not recognized by the installer, such
as a crypted partition.

USAGE:
  - "root" seed to the path of the device
  - "root_override" seed to True

This *may* break some partdisks functions, so we are currently
using the "root_override" seed to see if this is something wanted
by the user or not.
Usage of the CLI frontend of partdisks should not be affected.

NOTE: The target root SHOULD BE ALREADY FORMATTED, and no other
root should be selected. Also, doing a refresh *may* break out
things, so the module may need a restart.
3.70.0 (initial current release)
Added mount_on_install support in partdisks(glade):

An user can now force partition mounting at partdisks.inst even if the partition is not clean.
Added support for using custom icons on "info" status.

Added custom icons for the frontend modules.

New colors for the status bar. Also ensure we set text color.
frontends/glade: Ensure we correctly parse &.
frontend/glade: get info color from toolbar (and relative fg color)

frontend/glade: moved to a Gtk.Window(), with a full-width status bar.
modules/welcome: refactored.

Other cosmetic changes.
modules/partdisks: speedup reverting by trying to umount only one time.
modules/ubuntu: changed to support 13.04.
modules/bricks: added.
modules/bricks: changed library to libbricks.

Ship the bricks module.
config/semplice: execute bricks.
modules/partdisks: front/glade: ensure mount_on_install is not sensitive if we should format.
modules/bricks: some bug-fixing.
config/semplice-base: mirrorselect: add changes to the sets.
Merged upstream/master.
modules/partdisks: library: mount_partition added support for mount type.