[V21.5] Unbreak w3.el for 21.5.

VETO Malcolm> This patch restores the constant font-running-xemacs to Malcolm> font.el in 21.5 core, which was removed in a cleanup of Malcolm> the file back in November. Without this w3.el will not Malcolm> work (M-x w3 will fail trying to load the home page). If we must test for XEmacs, (featurep 'xemacs) works back to well before the unbundling of packages. Anybody who can get a modern packaged version of w3.el working with an XEmacs that old deserves applause, but by the same token they can probably handle this minor detail---putting "(provide 'xemacs)" in defaults.el would do the trick, for example. Please let's get rid of all "running-xemacs" variables, and all tests based on version strings. I don't know if the feature test is best for w3.el; I have to wonder if we shouldn't be testing for one or more specific features, functions, or variables instead. -- School of Systems and Information Engineering http://turnbull.sk.tsukuba.ac.jp University of Tsukuba Tennodai 1-1-1 Tsukuba 305-8573 JAPAN Ask not how you can "do" free software business; ask what your business can "do for" free software.