D25545: Rename signal for avoiding overload signal

[David Faure]

dfaure added a reviewer: kossebau.

REPOSITORY
  R246 Sonnet

REVISION DETAIL
  https://phabricator.kde.org/D25545

To: mlaurent, dfaure, kossebau
Cc: kde-frameworks-devel, LeGast00n, GB_2, michaelh, ngraham, bruns