linux: disable old and deprecated IDE subsystem by default

Note:

When running an auto-configured kernel within Hyper-V the virtual disks got
detected twice. Once by the new ATA subsystem and the other time by the old
and deprecated IDE subsystem.
dovecot: update upstream fixes for version 2.2.2

Note:

The patch now includes all fixes and improvements for dovecot 2.2.2 from the
dovecot 2.2 branch up to http://hg.dovecot.org/dovecot-2.2/rev/4883a8e1db13.
curl: Updated (7.25.0 -> 7.30.0)
linux: Updated (3.4.46 -> 3.4.47)
linux-src: Updated (3.4.46 -> 3.4.47)
linux-header: Updated (3.4.46 -> 3.4.47)