minicom: update 2.6.2 -> 2.7

Changelog:
- Configurable status line via -F option, see manpage for a listing of
  format specifier.
- Improve display of device name in status line.
- Script: Binary transmission feature via "!<"
- Bugfixes
doc: meta.xml -- fix a typo
doc: quick-start.xml -- fix a typo in the link.

Chapter 2, gmp 5.1.1.nix url and filename has changed in the repo
to 5.1.x.nix.
Make the user aware of the allowUnfree option.
fix typo
audacious: find gsettings schemas
sflphone: find gsettings schemas
Manual: Generate stable ids for options

E.g. ‘#opt-boot.initrd.kernelModules’.

Also, shut up a stupid XSLT warning (‘attribute value is not an NCName’).
Simplify
typo
Make it easier to run the tests

You can now run a test in the nixos/tests directory directly using
nix-build, e.g.

  $ nix-build '<nixos/tests/login.nix>' -A test

This gets rid of having to add the test to nixos/tests/default.nix.
(Of course, you still need to add it to nixos/release.nix if you want
Hydra to run the test.)
Simplify running tests even further

Now you can just say:

  $ nix-build '<nixos/tests/login.nix>'

You can still get the driver script for interactive testing:

  $ nix-build '<nixos/tests/login.nix>' -A driver
  $ ./result/bin/nixos-test-driver
Add script to create and upload GCE image.
kde-4.10: Remove
Fix installer test evaluation
Rewrite ‘with pkgs.lib’ -> ‘with lib’

Using pkgs.lib on the spine of module evaluation is problematic
because the pkgs argument depends on the result of module
evaluation. To prevent an infinite recursion, pkgs and some of the
modules are evaluated twice, which is inefficient. Using ‘with lib’
prevents this problem.
Update section on writing tests
Manual: Add some IDs
Add missing file
linux: Don't use underscores in the timestamp