install: Enable "cryptodisk" handling in GRUB.

This allows 'grub-install' to do the right thing when / or /boot is a
LUKS-encrypted partition.

Fixes <http://bugs.gnu.org/21843>.

* gnu/build/install.scm (install-grub): Add 'setenv' to set
'GRUB_ENABLE_CRYPTODISK'.
(wait-for-screen-text): New test.
* gnu/tests/base.scm (run-basic-test): Add #:initialization parameter
and honor it.
* gnu/tests/install.scm (%encrypted-root-os)[kernel-arguments]: Remove.
(%encrypted-root-installation-script): Pass '--uuid' to 'cryptsetup
luksFormat'.  Remove 'sed' invocation.
(enter-luks-passphrase): New procedure.
(%test-encrypted-os)[value]: Pass #:initialization to 'run-basic-test'.

mapped-devices: Use 'cryptsetup-static' in 'luks-device-mapping'.

* gnu/system/mapped-devices.scm (open-luks-device): Use
CRYPTSETUP-STATIC instead of CRYPTSETUP.  Use 'file-append'.
(close-luks-device): Likewise.

marionette: Add 'marionette-screen-text' using OCR.

* gnu/build/marionette.scm (marionette-screen-text): New procedure.
* gnu/tests/base.scm (run-basic-test)["screen text"]: New test.

marionette: Delay synchronization with the host's REPL.

* gnu/build/marionette.scm (<marionette>)[marionette-repl]: Rename to...
[%marionette-repl]: ... this.
(marionette-repl): New macro.
(make-marionette): Wrap last 'read' call into 'delay', making the last
argument to 'marionette' a promise of a port.
(marionette-eval): Use 'force' in 'match' clause.

gnu: python-passlib: Update to 1.7.0.

* gnu/packages/python.scm (python-passlib, python2-passlib): Update to 1.7.0.

gnu: perl-digest-md5: Fix typo.

* gnu/packages/perl.scm (perl-digest-md5)[arguments]: Remove extra ')'.

gnu: Add perl-digest-md5.

* gnu/packages/perl.scm (perl-digest-md5): New variable.

Signed-off-by: Marius Bakke <mbakke@fastmail.com>

gnu: chez.scm: Add '#:use-module srfi srfi-1'.

This is a follow-up to 1e16648f825b76a8feb63ce51e7ada8ae9870aa0.

* gnu/packages/chez.scm: Add '#:use-module srfi srfi-1'.

gnu: Add aspell-dict-he.

* gnu/packages/aspell.scm (aspell-dict-he): New variable.

gnu: chez-scheme: Remove support for armhf.

* gnu/packages/chez.scm (chez-scheme)[supported-systems]: Remove
armhf-linux from the list of supported systems.

gnu: linux-libre: Update to 4.8.10.

* gnu/packages/linux.scm (%linux-libre-version, %linux-libre-hash)
(linux-libre): Update to 4.8.10.

gnu: linux-libre@4.4: Update to 4.4.34.

* gnu/packages/linux.scm (linux-libre-4.4): Update to 4.4.34.

gnu: guix: Update development snapshot.

* gnu/packages/package-management.scm (guix-devel): Update to 1f410017.

Revert "gnu: Update mit-krb5 to version 1.14.4."

This reverts commit 2947ff6430da5d60017b0c5c8c51fd2a1d85440b, which
would have caused too many rebuilds for 'master'.

marionette: Avoid use of SIGALRM for timeouts.

* gnu/build/marionette.scm (make-marionette)[accept*]: New procedures.
Remove calls to 'sigaction'.  Use 'accept*' instead of 'accept'.

gnu: Add 'cryptsetup-static'.

* gnu/packages/cryptsetup.scm (static-library): New procedure.
(cryptsetup-static): New variable.

gnu: Add 'lvm2-static'.

* gnu/packages/patches/lvm2-static-link.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/linux.scm (lvm2)[source](patches): New field.
(lvm2-static): New variable.

gnu: grub: Add dependency on LVM2.

* gnu/packages/grub.scm (grub)[inputs]: Add LVM2.

gnu: python-pyld: Update to 0.7.1.

* gnu/packages/python.scm (python-pyld): Update to 0.7.1.

gnu: Update mit-krb5 to version 1.14.4.

* gnu/packages/mit-krb5.scm (mit-krb5): Update to 1.14.4