x11-libs/wxGTK: fix USE=doc html installation

Actually adapt to the switch of the doc tarball. Apparently the old
wxPython docs tarball was just pulled in and never used, as the old
source paths came from the main wxPython tarball, not the doc one,
and the doc seemed to just duplicate the docs already present in the
main tarball for offline reading separate from code. As older versions
should go away ASAP for security, this remains as-is in older ebuilds.

Closes: https://bugs.gentoo.org/643484
Package-Manager: Portage-2.3.19, Repoman-2.3.6

x11-libs/wxGTK/wxGTK-3.0.3-r300.ebuild

@@ -159,9 +159,8 @@ multilib_src_install_all() {
  newdoc base/readme.txt base_readme.txt
  newdoc gtk/readme.txt gtk_readme.txt
 
- if use doc; then
- dodoc -r "${S}"/docs/doxygen/out/html
- fi
+ use doc && HTML_DOCS="${WORKDIR}"/wxWidgets-${PV}-docs-html/.
+ einstalldocs
 
  # Unversioned links
  rm "${D}"/usr/bin/wx{-config,rc}

x11-libs/wxGTK/wxGTK-3.0.3.ebuild

@@ -125,9 +125,8 @@ multilib_src_install_all() {
  newdoc base/readme.txt base_readme.txt
  newdoc gtk/readme.txt gtk_readme.txt
 
- if use doc; then
- dodoc -r "${S}"/docs/doxygen/out/html
- fi
+ use doc && HTML_DOCS="${WORKDIR}"/wxWidgets-${PV}-docs-html/.
+ einstalldocs
 
  # Stray windows locale file, causes collisions
  local wxmsw="${ED}usr/share/locale/it/LC_MESSAGES/wxmsw.mo"