* lisp/progmodes/vhdl-mode.el: Use cl-lib when available

(vhdl--pushnew): New macro.  Use it instead of `pushnew`.
(emacs-major-version): Don't bother checking (featurep 'xemacs)
since that is always (< emacs-major-version 25) as well.
1 job for master in 54 minutes and 39 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
failed #2786
test-all

00:54:39

 
Name Stage Failure
failed
test-all Test
Makefile:318: recipe for target 'check-doit' failed
make[2]: Leaving directory '/builds/emacs/emacs/test'
make[2]: *** [check-doit] Error 1
make[1]: *** [check-expensive] Error 2
Makefile:293: recipe for target 'check-expensive' failed
make[1]: Leaving directory '/builds/emacs/emacs/test'
make: *** [check-expensive] Error 2
Makefile:959: recipe for target 'check-expensive' failed
ERROR: Job failed: exit code 1