New packages: pam_mount and libHX

Add pam_mount package. Integration into NixOS is still missing.
Merge branch 'upstream' into pam_mount

Conflicts:
	pkgs/top-level/all-packages.nix
Fix description in pam_mount and libHX. Add tstrobel as maintainer.
Add package: Enlightenment E19!

Wayland desktop shell is not enabled, yet.
update camlistore to 0.8
Fixed URL in bashmount package.
added alock package
haskell-lens-family: new expression
haskell-lens-family-th: new expression
rustc: fixed build after 7068828389390dca066fb1062bd27148d49339d4

That commit changed the patch to work for the new HEAD, but that new
patch breaks 0.11. I made two patch for the two versions.
mopdiy: Update from 0.19.3 to 0.19.4
diod: Update from 1.0.22 to 1.0.23
wal-e: Update from 0.6.9 to 0.6.10
chrony: Update from 1.30 to 1.31
nixos/nfs: Fix configuration merge
lirc: Update from 0.9.1 to 0.9.1a
Merge pull request #4109 from cstrahan/update-camlistore

update camlistore to 0.8
Merge pull request #4112 from k0ral/bashmount

Fixed URL in bashmount package.
bashmount: use fetchFromGitHub instead of fetchurl
Merge pull request #4116 from joachifm/lens-family

Add haskell-lens-family{,-th}