XEmacs Lisp stuff

Just a number of adjustments I made to my XEmacs 21.4.12 installation which might be useful for others.

The following replace.el changes the query and replace functions in such a way that they propose your last entry as a default value. Two separate history lists are being maintained, one for the from and one for the to arguments ("replace from with to"). Files: replace.el [patch].

With several instances of XEmacs running on different machines I felt the urge to display the hostname XEmacs is running on in the modeline or echo area and time.el seemed like the place to add this. The following time.el will add a hostname option to display-time. Files: time.el [patch].