[net-im/ktp-*] Bump to 0.5.2 (bug #450686)

This includes a DEPEND change for net-im/ktp-call-ui to <net-libs/telepathy-farstream-0.6 to fix bug #449296.
This also introduces KTP_PV in net-im/ktp-kded-module to handle 0.5.2.1 version in the Telepathy/KDE 0.5.2 set.

Bug: 449296
Bug: 450686

Package-Manager: portage-2.2.0_alpha151
[net-im/kde-telepathy-meta] Add net-im/ktp-call-ui to RDEPEND

This syncs the ebuilds with the Gentoo tree.

Package-Manager: portage-2.2.0_alpha151
[net-im/ktp-kded-module] Fix $S for version 0.5.2.1

S should be $PN-0.5.2 instead of $PN-0.5.2.1

Package-Manager: portage-2.2.0_alpha151