Identify and add missing symlinks for notify-osd-icons

1. Take a look at the available n-osd icons to see which domains we were mapping
2. Cross that with the list of apps mentioned in the NotifyOSD spec
3. Extract the relevant package source to see which new icon names were used
4. Determine the mapping between original icon names and icon names mapped by n-osd

system-config-printer, uses:
  printer

network-manager-applet, uses all these specific icons:
  nm-adhoc
  nm-device-wired
  nm-device-wwan
  nm-device-wireless
  nm-no-connection

rhythmbox, requires no notification icon (uses pixbufs of album arts)

evolution-indicator, n-osd patch already applied

banshee, requires no notification icon (uses pixbufs of album arts)

empathy, requires no notification icon (uses pixbufs for avatars)

pidgin-libnotify, requires no notification icon (uses pixbufs for avatars)

gnome-mount: not applicable once patched (notification turned into a dialog box)

gnome-settings-daemon, apart ftrom synchronous notifications added by our patch, requires:
 gsd-xrandr
 preferences-desktop-accessibility

gnome-power-manager:
gpm-ac-adapter.svg
gpm-battery-000-charging.svg
gpm-battery-000.svg
gpm-battery-020-charging.svg
gpm-battery-020.svg
gpm-battery-040-charging.svg
gpm-battery-040.svg
gpm-battery-060-charging.svg
gpm-battery-060.svg
gpm-battery-080-charging.svg
gpm-battery-080.svg
gpm-battery-100-charging.svg
gpm-battery-100.svg
gpm-battery-charged.svg
gpm-keyboard-000.svg
gpm-keyboard-020.svg
gpm-keyboard-040.svg
gpm-keyboard-060.svg
gpm-keyboard-080.svg
gpm-keyboard-100.svg
gpm-mouse-000.svg
gpm-mouse-020.svg
gpm-mouse-040.svg
gpm-mouse-060.svg
gpm-mouse-080.svg
gpm-mouse-100.svg
gpm-phone-000.svg
gpm-phone-020.svg
gpm-phone-040.svg
gpm-phone-060.svg
gpm-phone-080.svg
gpm-phone-100.svg
gpm-primary-000-charging.svg
gpm-primary-000.svg
gpm-primary-020-charging.svg
gpm-primary-020.svg
gpm-primary-040-charging.svg
gpm-primary-040.svg
gpm-primary-060-charging.svg
gpm-primary-060.svg
gpm-primary-080-charging.svg
gpm-primary-080.svg
gpm-primary-100-charging.svg
gpm-primary-100.svg
gpm-primary-charged.svg

Besides on gpm, there are many stock icons being used that could be replaced by better icons:
- error on suspend or hibernate being disabled by admin: GPM_STOCK_APP_ICON
- on "power information" key pressed, GTK_STOCK_DIALOG_INFO

The rest seems to be used by some dead code paths:
- on "low capacity" warning, GTK_STOCK_DIALOG_INFO
- on "fully charged" event, GTK_STOCK_DIALOG_INFO

Missing symlinks mapping requests to icons in the current set. Attached patch for the notify-osd-icons branch