ktorrent icons

[Jonathan Riddell]

You recent change seems to have broken make install on ktorrent master

https://build.neon.kde.org/job/xenial_unstable_kde-extras_ktorrent_bin_amd64/24/console

02:37:42 CMake Error at ktorrent/icons/cmake_install.cmake:36 (file):
02:37:42   file INSTALL cannot find
02:37:42   "/workspace/build/ktorrent/icons/icons/16-apps-ktorrent.png".

Note "/icons/icons/" rather than just "/Icons/"

My cmake isn't good enough to work out where that extra /icons comes from

Jonathan