Use g_task_set_source_tag on all of our async methods
This is supposed to help with debugging and profiling per the docs for
g_task_set_name, which is automatically called by g_task_set_source_tag in
glib >= 2.76.0 which is our minimum requirement.
Testing Done:
Consulted with the turtles
Reviewed at https://reviews.imfreedom.org/r/2955/
# SOME DESCRIPTIVE TITLE.
# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
# This file is distributed under the same license as the PACKAGE package.
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# Copyright (C) Artur Flinta <aflinta@at.kernel.pl>, 2004
# Copyright (C) Krzysztof Foltman <kfoltman@onet.pl>, 2003
# Copyright (C) Paweł Godlewski <pawel@endure.pl>, 2007
# Piotr Drąg <piotrdrag@gmail.com>, 2009
# Copyright (C) Piotr Makowski <pmakowski@aviary.pl>, 2008