sci-chemistry/gnome-chemistry-utils: Add missing dep on app-text/gnome-doc-utils, #479536

Package-Manager: portage-2.2.0_alpha196
virtual/cblas: Drop obsolete USE dep for openblas, #478130

Package-Manager: portage-2.2.0_alpha196
sci-libs/avogadro-libs: Fix underlinking reported by ercpe, allow monolithic plugin module

Package-Manager: portage-2.2.0_alpha196