Build-time updates, pending a fresh build test

Removed packages:
  gconf-editor and all GConf configuration files
  Totem, gedit, AbiWord, VIPS / nip2, IsoMaster
  emelFM2, Pidgin, gFTP, uGet, eBoard, GNUChess
  Xmahjongg, parcellite, florence, File-Roller
  e3, Geeqie, ufraw, Qalculate, mkspeech script,
  Ghostscript, fbida, Gnumeric, DjVu
Removed corresponding user configuration files.
Changed lxpolkit to polkit-gnome.
Enabled predictable network interface names.
Added /dev/shm to chroot mounts.
Upgraded kernel to 3.14.5.
Removed non-64-bit KEXEC kernel.
Updated compilation flags to prepare for 64-bit migration.
Enabled SSE2 and SSE3 USE-flags.
Disabled GRKERNSEC_KMEM due to need of KEXEC.
Enabled GRKERNSEC_RANDSTRUCT.
Enabled PROC_FS in KEXEC (#517182).
Added open-vm-tools-kmod UID/GID patch (#507026).
Updated VirtualBox patches (#424816).
Updated firmware files.
Removed main user from "lp" group (unnecessary for net-wireless/bluez).

Closes (GitHub: #12, #13, #14, #17).