sci-mathematics/genius: bump to 1.0.23

sci-mathematics/genius: bump to 1.0.23

Intentionally not bumping to 1.0.24, as that mainly just bundles
vte:0, and we don't need it just hiding as a copy, at least not
until we still have to have vte:0 packages anyways.
Other changes:

* Remove long unnecessary libgnome*, libglade and popt rdeps
* Remove gone rarian and gnome-doc-utils build deps
* Depend on minimum versions required by configure.ac
* Fix LICENSE to GPL3 _or later_
* Depend on virtual/yacc instead of local ORing of providers
* gettext shouldn't be optional, and it is required by gtk+ anyway,
  and it's build time for translations anyway (libintl at runtime)
* Remove gtk-update-icon-cache explicit dep - other packages don't
  add their own dep, but rely on gtk+ pulling it in, as that's what
  will actually use the cache. Do the same here

Unfortunately QA warns about unrecognized --disable-scrollkeeper
configure passing, but nothing worth doing about here - upstream has
commented that stuff out with "#" comments in configure.ac, instead
of "dnl" comments, thus it appears in configure and gnome2.eclass
greps finds it and passes the argument.

Closes: https://bugs.gentoo.org/605792
Package-Manager: Portage-2.3.52, Repoman-2.3.12
Signed-off-by: Mart Raudsepp <leio@gentoo.org>