* gio/src/actionmap.ccg: Use the Glib::VariantBase::cast_dynamic<>()
syntax for calling the static member function.
* gio/src/emblemedicon.hg: Add a const version of get_emblems().
* gio/src/networkmonitor.hg: Add class documentation.
* gio/src/tlsclientconnection.hg:
* gio/src/tlsfiledatabase.hg:
* gio/src/tlsserverconnection.hg: Remove "TODO:" from some comments where
there's really nothing to do.
* glib/src/miscutils.ccg: get_system_data_dirs(), get_system_config_dirs():
Use Glib::ArrayHandler<std::string>::array_to_vector().
* glib/src/optioncontext.hg: Make it explicit that OptionContext is not
copyable.
* glib/src/varianttype.hg: Rename _get_string_length() to get_string_length().
The leading underscore looks like a mistake.
Remove the comment "Use something instead of gsize?" gsize is used in
many methods in glibmm and gtkmm.