file cleanup

FIXME

pixmaps/Makefile.am

pixmaps/about.png

pixmaps/audio.png

pixmaps/gsm.png

pixmaps/logo_ico.png

pixmaps/network.png

pixmaps/preferences.png

pixmaps/sfl-logo.png

pixmaps/sflphone_logo.png

pixmaps/signalisations.png

pixmaps/tray-icon.png

pixmaps/video.png

rings/Makefile.am

rings/konga.ul

rings/phone.au

rings/phone2.au

skins/Makefile.am

skins/default/.xvpics/display_bg.png

skins/default/.xvpics/hangoff.png