gnu: xf86-input-libinput: Update to 0.25.1.

* gnu/packages/xorg.scm (xf86-input-libinput): Update to 0.25.1.

gnu: ant: Update to 1.9.9.

* gnu/packages/java.scm (ant): Update to 1.9.9.

system: Clarify that SYSTEM is either a derivation or #f.

* gnu/system.scm (operating-system-boot-parameters):  Clarify that SYSTEM is
either a derivation or #f.

scripts: Remove profile-grub-entries.

* guix/scripts/system.scm (profile-grub-entries): Delete variable.

system: grub: Use boot-parameters instead of menu-entry where possible.

* gnu/system/grub.scm (boot-parameters->menu-entry): New variable.
(grub-configuration-file): Use boot-parameters
instead of menu-entry where possible.
* guix/scripts/system.scm (profile-boot-parameters): Update docstring.
(reinstall-grub): Use profile-boot-parameters.
(perform-action): Use profile-boot-parameters.

system: Use operating-system-boot-parameters directly.

* gnu/system.scm (operating-system-bootcfg): Use
operating-system-boot-parameters directly.

system: vm: Use operating-system-kernel-arguments.

* gnu/system/vm.scm (system-qemu-image/shared-store-script):
Use operating-system-kernel-arguments.

scripts: Make boot-parameters label include generation number and time.

* guix/scripts/system.scm (system->boot-parameters): Make label include
generation number and time.

system: Introduce read-boot-parameters-file.

* gnu/system.scm (read-boot-parameters): Remove export.
(read-boot-parameters-file): New variable. Export it.
* guix/scripts/system.scm (profile-boot-parameters): Use
read-boot-parameters-file.
(profile-grub-entries): Use read-boot-parameters-file.
(reinstall-grub): Use read-boot-parameters-file.
(display-system-generation): Use read-boot-parameters-file.

system: Introduce operating-system-kernel-arguments and use it.

* gnu/system.scm (bootable-kernel-arguments): New variable.
(operating-system-kernel-arguments):  New variable.
(operating-system-bootcfg): Use operating-system-kernel-arguments.
(operating-system-boot-parameters): Use operating-system-kernel-arguments.

system: Factorize operating-system-boot-parameters-file.

* gnu/system.scm (operating-system-boot-parameters): New variable.
(operating-system-boot-parameters-file): Modify.

gnu: ansible: Update to 2.3.0.0.

* gnu/packages/admin.scm (ansible): Update to 2.3.0.0.

gnu: aide: Update to 0.16.

* gnu/packages/admin.scm (aide): Update to 0.16.
[inputs]: Add pcre.

gnu: zstd: Update to 1.2.0.

* gnu/packages/compression.scm (zstd): Update to 1.2.0.

gnu: abiword: Update to 3.0.2.

* gnu/packages/patches/abiword-explictly-cast-bools.patch: Update patch.
* gnu/packages/patches/abiword-black-drawing-with-gtk322.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/abiword.scm (abiword): Update to 3.0.2.
[source]: Remove outdated snippet; add new patch.
[arguments]: Pass CXXFLAGS.

gnu: jalv-select: Fix regular expression.

* gnu/packages/music.scm (jalv-select)[arguments]: Fix substitution to find
the available jalv executables.

gnu: gxtuner: Update to 2.4.

* gnu/packages/music.scm (gxtuner): Update to 2.4.
[inputs]: Replace gtk+-2 with gtk+.

gnu: jalv-select: Update to 0.8.

* gnu/packages/music.scm (jalv-select): Update to 0.8.

gnu: qsynth: Update to 0.4.4.

* gnu/packages/audio.scm (qsynth): Update to 0.4.4.

gnu: qjackctl: Build with JACK 1.

We build all packages with JACK 1.  It is compatible with JACK 2, which users
may install to get additional features.

* gnu/packages/audio.scm (qjackctl)[inputs]: Replace "jack-2" with "jack-1".