[profiles/package.mask] Mask KDE Frameworks 5.0.0
[dev-libs/extra-cmake-modules] Version bump.

Package-Manager: portage-2.2.10
[dev-libs/extra-cmake-modules] Remove old comment.

ECM no longer appears to have any demo references.

Package-Manager: portage-2.2.10
[kde-frameworks] Add 5.0.0