[R pkgs] Monkey-patch `make-autoload' to 21.5.29 in package build

RECOMMEND packages This is the recently discussed monkey-patch to fix the build breakage in the packages with 21.4. I'm running pristine builds now with XEmacs 21.4.21, 21.5.28, and current Mercurial, but I don't expect any problems because I've done a fair amount of testing in "clean" trees already, so I'm submitting in advance of the full tests. This patch DOES NOT REPLACE porting Mike's changes to XEmacs 21.4 (in progress). It is intended as a convenience for users who, for whatever reason, are in no hurry to upgrade their XEmacsen. How it works: It checks for an XEmacs which is >= 21.5.29 (the next beta) or < 21.5 and >= 21.4.22 (the release Vin is working on now). If so, it does nothing. Otherwise, it assumes an unpatched older XEmacs, and (1) requires 'autoload-operators from xemacs-base, then (2) requires 'autoload from the core. (This prevents a later require of 'autoload from overwriting our monkey-patch. If they do an explicit load, there's nothing we can do about it, of course, but presumably they know what they're doing.) Next (3) we check that the autoload-operators are loaded, and if not monkey-patch that variable in. (4) We undefun `make-autoload', and then redefine it with this version (current today, presumably won't change before 21.5.29). Finally, we add the eieio deffoos to autoload-make-autoload-operators (if they're not already present). This is also conditional on XEmacs version. I considered moving it outside of the check, but decided that if we have an XEmacs that passes the "recent-enough" check but the packages don't have a recent-enough xemacs-base, we ask the reporter to upgrade xemacs-base. Per Mike's recommendation, there's a warning that the monkey-patch is deprecated and users should upgrade. I plan to disable the monkey-patch on or soon after 1 January 2010. Note that package-future.el itself is provided as an attachment at the end of this message, and should be placed in the top of the package hierarchy (ie, next to XEmacs.rules). _______________________________________________ XEmacs-Patches mailing list XEmacs-Patches(a)xemacs.org http://calypso.tux.org/cgi-bin/mailman/listinfo/xemacs-patches