Improve support for SELinux in python_merge_intermediate_installation_images().
(Patch by Arfrever. Backported from Progress Overlay.)
--- python.eclass
+++ python.eclass
@@ -1683,7 +1683,7 @@
 		popd > /dev/null || die "popd failed"
 
 		if ROOT="/" has_version sys-apps/coreutils; then
-			cp -fr --preserve=all "${intermediate_installation_images_directory}/${PYTHON_ABI}/"* "${D}" || die "Merging of intermediate installation image for Python ABI '${PYTHON_ABI} into installation image failed"
+			cp -fr --preserve=all --no-preserve=context "${intermediate_installation_images_directory}/${PYTHON_ABI}/"* "${D}" || die "Merging of intermediate installation image for Python ABI '${PYTHON_ABI} into installation image failed"
 		else
 			cp -fpr "${intermediate_installation_images_directory}/${PYTHON_ABI}/"* "${D}" || die "Merging of intermediate installation image for Python ABI '${PYTHON_ABI} into installation image failed"
 		fi