* 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 [source]: Remove outdated snippet; add new patch.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.