[kde-frameworks/kde4support] Set SYSCONF_INSTALL_DIR.

Package-Manager: portage-2.2.8-r1
[kde-frameworks] Reset keywords.
[profiles/package.mask] Update kde-frameworks mask.
[kde-frameworks/kde4support] Add 4.98.0

Package-Manager: portage-2.2.8-r1
[sets] Add kde4support to frameworks sets.