Deprecating ECMDBusAddActivationService

[Alex Merry]

I realise there hasn't even been a single release yet, but I'd already
like to deprecate the ecm_dbus_add_activation_service macro; uses of it
can be replaced by

configure_file(${CMAKE_CURRENT_SOURCE_DIR}/foo.service.in
${CMAKE_CURRENT_BINARY_DIR}/foo.service)
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/foo.service DESTINATION
${DBUS_SERVICES_INSTALL_DIR})

for each service you want to install, which is a lot less magic.  It
only really simplifies things for projects that want to install a lot of
service files at once (I can't find any).

Given there are only two users according to LXR, I would be inclined to
remove it entirely, except that we've already released beta1 and so I
want to maintain source compatibility.

Any objections to this?

Alex


PS: I also really don't like ECMInstallIcons, which is far too
KDE-specific, but I'm still figuring out the best thing to do with that.