While at it, made the configs a bit closer to those from Ubuntu:
* disabled IDE drivers which are now barely maintained anyway;
* disabled some debugging facilities (verboseness of some drivers,
etc.);
* made some often used modules like vfat, fuse, ata_piix, etc.,
built-in.
* and so forth.
Among other things:
* BFQ was updated to v8r7 for 4.9.0
* AUFS was updated to version 4.9-20161219
* inotify-increase-max-user-watches.patch was dropped: it is better to
tune such things from user space instead.
