Added delay before typing and different typing options:

The following flags may be used in conjunction with '--xout':

  * Passing '-d <n>' will cause pwman to sleep for <n> milliseconds
    prior to typing the password through X (after the user has
    selected the service and username).

  * Passing '--confirm' will cause pwman to type the password twice,
    pressing the tab key in between (for use in password confirmation
    pages).

  * Passing '--noreturn' will cause pwman to not press return after
    typing the password.