ContactsdPluginLoader: Properly load plugins specified in the command line and ignore plugins already loaded.
ContactsdPluginLoader: Load all plugins if none is specified in the command line.
contactsd: Do not crash if --plugins is used in the command line but no plugin is specified.
telepathy plugin: Make debugs more useful, fix duplicated contacts and only signal roster changes when it actually changes.
telepathy plugin: Re-enable tp-qt4 debug/warning messages.
telepathy plugin: Only sync contacts if there is actually contacts to be synced.
telepathy plugin: Proper sync contact changes.
Removed helloworld plugin.
Updated debian packaging with latest changes.
Added initial test infrastructure to be able to run tests in a private dbus session running tracker.
Fixes: NB#189555 - [REG] Remote user presence is not updated in Conversations List nor Conversational View

RevBy: Andre Moreira Magalhaes (andrunko) <andre.magalhaes@collabora.co.uk>
Added new target "make confclean".
Implement avatar support

RevBy: Andre Moreira Magalhaes (andrunko) <andre.magalhaes@collabora.co.uk>
Bump tp-qt4 dependency to >= 0.3.9.
Removed old benchmarks.
Added glib contact-list test to be used by automated tests.
Changes : dpkg-buildpackage build fix + typo fix
Proper export avatar data related methods without static keyword.
Build testslib statically and remove warnings and qt build definitions.
tests/lib/glib/contact-list-conn: Use const where appropriate.