[kde-base] Add KDE SC 4.12.5

Package-Manager: portage-2.2.10
[profiles/package.mask] Add KDE SC 4.12.5
[kde-base] Add KDE Workspace 4.11.9

Package-Manager: portage-2.2.10
[profiles/package.mask] Add KDE Workspace 4.11.9
[eclass] Add kde-workspace 4.11.9 SRC_URI