Include (empty) apps.tempicons directory (#896)

In the future we could create it (and populate) in firstboot, but for
now provide at least empty directory.
fedora: include linux-firmware package

Required for most WiFi cards.
version 2.1.8
Prepare mountpoint before calling any dist-specific script

For example debian's 00_prepare.sh want to use it.
Merge remote-tracking branch 'nrgaway/wheezy' into wheezy
archlinux: use most recent installation ISO
Merge remote-tracking branch 'nrgaway/wheezy' into wheezy
Merge branch 'release2'
Merge remote-tracking branch 'joanna/master'
Merge remote-tracking branch 'nrgaway/wheezy' into wheezy
whonix: remove unused file
whonix: place "allow all" sudo configuration only build time

qubes-core-agent will provide appropriate file later so do not conflict
with it.
whonix: use the same user UID as host to build whonix pkgs

Otherwise whonix_build will have no access to sources (which are
bind-mounted from outside of chroot).
debian: do not remove qubes repo
debian: move system/X11 configuration to gui-agent-linux
debian/whonix: it is irrelevant whether ip_forward is enabled on build host
debian: do not give access to host /run
Merge branch 'wheezy'
Merge branch 'master' of git://git.qubes-os.org/marmarek/linux-template-builder into wheezy