guix: java-utils: Factorize pom.xml generation.

* guix/build/java-utils.scm (generate-pom.xml): New procedure.
* gnu/packages/maven.scm (java-surefire-junit4): Use it.
* gnu/packages/java.scm (java-qdox, java-jsr250, java-jsr305)
(java-aopalliance, java-jboss-el-api-spec)
(java-jboss-interceptors-api-spec): Use it.
(java-qdox-M9): Ensure the generated pom file has the correct version.

gnu: nyxt: Update to 2.1.0.

* gnu/packages/web-browsers.scm (nyxt): Update to 2.1.0.

gnu: libreoffice: Update to 7.1.4.2.

* gnu/packages/libreoffice.scm (libreoffice)[inputs]: Add box2d, dtoa.
[arguments]: Adjust custom 'prepare-src, 'bin-and-desktop-install phases.
Add custom 'insert-external-tarballs phase. Adjust configure-flags to
build without skia. Remove deprecated make-flag

gnu: orcus: Update to 0.16.1.

* gnu/packages/libreoffice.scm (orcus): Update to 0.16.1.

gnu: orcus: Don't build static library.

* gnu/packages/libreoffice.scm (orcus)[arguments]: Add configure-flag to
skip static library.

gnu: ixion: Update to 0.16.1.

* gnu/packages/libreoffice.scm (ixion): Update to 0.16.1.

gnu: ocaml-uri: Use a source file-name.

* gnu/packages/ocaml.scm (ocaml-uri)[source]: Add a file-name field.

gnu: emacs-shell-command+: Use a source file-name.

* gnu/packages/emacs-xyz.scm (emacs-shell-command+)[source]: Add a
file-name field.

gnu: ensembl-vep: Use a source file-name.

* gnu/packages/bioinformatics.scm (ensembl-vep)[source]: Add a file-name
field.

gnu: Add box2d.

* gnu/packages/game-development.scm (box2d): New variable.

gnu: libreoffice: Add vendor string.

Previously: This release was supplied by nixbld.
Now:        This release was supplied by GNU Guix.

* gnu/packages/libreoffice.scm (libreoffice)[arguments]: Add
configure-flag to set vendor to 'GNU Guix'.

gnu: Add rust-battery-0.7.

* gnu/packages/crates-io.scm (rust-battery-0.7): New variable.

Signed-off-by: Nicolas Goaziou <mail@nicolasgoaziou.fr>

gnu: rust-lazycell-1: Update to 1.3.0.

* gnu/packages/crates-io.scm (rust-lazycell-1): Update to 1.3.0.
[arguments]: Remove #:skip-build.

Signed-off-by: Nicolas Goaziou <mail@nicolasgoaziou.fr>

gnu: Add rust-mach-0.3.

* gnu/packages/crates-io.scm (rust-mach-0.3): New variable.
(rust-mach-0.2): Inherit from above.

Signed-off-by: Nicolas Goaziou <mail@nicolasgoaziou.fr>

gnu: Add rust-uom-0.30.

* gnu/packages/crates-io.scm (rust-uom-0.30): New variable.

Signed-off-by: Nicolas Goaziou <mail@nicolasgoaziou.fr>

gnu: Add rust-uom-0.31.

* gnu/packages/crates-io.scm (rust-uom-0.31): New variable.

Signed-off-by: Nicolas Goaziou <mail@nicolasgoaziou.fr>

gnu: emilua: Update to 0.3.2.

* gnu/packages/lua.scm (emilua): Update to 0.3.2.

Signed-off-by: Nicolas Goaziou <mail@nicolasgoaziou.fr>

gnu: Add gopkg.in/yaml.v3.

* gnu/packages/golang.scm (go-gopkg-in-yml-v3): New variable

Signed-off-by: Nicolas Goaziou <mail@nicolasgoaziou.fr>

gnu: widelands: Update description.

* gnu/packages/games.scm (widelands)[description]: Update to mirror changes in
the stable release.

gnu: widelands: Ensure Guix catches versioning scheme switch.

* gnu/packages/games.scm (widelands-21): New variable.

"21" was the last beta release.  Upstream has now switched to a new versioning
scheme, with lesser numbers.