Notification area blink rate and duration XSETTING

[Gregory Merchan <merchan phys lsu edu>]

I think the blinking rate and duration of icons in the notification area
should be an XSETTING shared by all desktop environments.

For interface consistency, there must be a common setting.
For accessibility, there must be a controllable setting.[1][2]

XSETTINGS is (proposed to be) "a mechanism to allow the configuration of
settings such as double click timeout, drag-and-drop threshold, . . . ."[3]

Gtk+ uses XSETTINGS for cursor blinking[4] and rate[5]. However, the visual
bell settings are specific to Metacity, so perhaps this should be handled
elsewhere.[6]

Cheers,
Greg

[1] http://developer.gnome.org/projects/gap/guide/gad/index.html#id2825537
[2] http://developer.gnome.org/projects/gap/guide/gad/index.html#id2826090
[3] http://www.freedesktop.org/standards/xsettings/xsettings.html#goals
[4] http://cvs.gnome.org/bonsai/cvsblame.cgi?file=gtk%2B%2Fgtk/gtksettings.c&rev=&root=/cvs/gnome#174
[5] http://cvs.gnome.org/bonsai/cvsblame.cgi?file=gtk%2B%2Fgtk/gtksettings.c&rev=&root=/cvs/gnome#182
[6] Or perhaps Metacity should be using XSETTINGS?