finish version test cleanup: Lucid

[Dan Nicolaescu]

Most string version tests have been replaced with feature tests. 
These are the remaining ones:

./progmodes/cperl-mode.el:81:      (defconst cperl-xemacs-p (string-match 
"XEmacs\\|Lucid" emacs-version))
./progmodes/cperl-mode.el:154:(defconst cperl-xemacs-p (string-match 
"XEmacs\\|Lucid" emacs-version))
./ielm.el:172:  (if (string-match "Lucid" emacs-version)
./ps-print.el:1467: ((string-match "Lucid" emacs-version)
./ps-print.el:1469: ((string-match "Epoch" emacs-version)
./calc/calc.el:825:(defvar calc-emacs-type-lucid (not (not (string-match 
"Lucid" emacs-version))))
./emulation/tpu-mapper.el:83:(defconst tpu-lucid-emacs19-p (string-match 
"Lucid" emacs-version)

Can these tests be replaced with feature tests?


./ldefs-boot.el:8849: (defmacro ediff-cond-compile-for-xemacs-or-emacs 
(xemacs-form emacs-form) (if (string-match "XEmacs" emacs-version) xemacs-form 
emacs-form))

-- This one just means that ldefs-boot.el needs to be regenerated, can
   someone please do that? (I am not sure if there's any subtlety
   involved, so I'd rather not do it)