Log Message:
Make www/emacs-w3m build and run with xemacs, fixing PR pkg/40685

Changes:

o accomodate for differing dependencies:
  + graphics/gifsicle as a bug workaround
  + devel/flim (this was an implicite dependency through devel/semi)
  - devel/{apel,semi}, editors/mule-ucs contained in xemacs-packages

o conditional PLIST changes for differing installation paths

Tested with xemacs 21.4 and emacs 22