Due to a bug in the keychain package the '--noask' option wasn't always
used, this caused the Qt4 ssh-askpass dialogue to get loaded before a
window manager was fully-started, preventing the user from entering the
passphrase as the dialogue never gets focus without a window manager
running. This update fixes this issue by insuring the '--noask'
option is used when logging into a DE (the Qt4 ssh-askpass dialogue
is only shown when the user opens a new terminal emulator window).