Megatest

(define (common:set-last-run-version)
  (rmt:set-var "MEGATEST_VERSION" (common:version-signature)))

(define (common:version-changed?)
  (not (equal? (common:get-last-run-version)
	       (common:version-signature))))

;; Move me elsewhere ...
;;
(define (common:exit-on-version-changed)
(define (common:cleanup-db)
  (db:multi-db-sync 
   #f ;; do all run-ids
   ;; 'new2old
   'killservers
   'dejunk
   ;; 'adj-testids
   ;; 'old2new
   'new2old)
  (if (common:version-changed?)
      (common:set-last-run-version)))
      (begin

(define (common:exit-on-version-changed)
  (if (common:version-changed?)
      (let ((mtconf (conc (get-environment-variable "MT_RUN_AREA_HOME") "/megatest.config")))
        (debug:print 0 #f
		     "ERROR: Version mismatch!\n"
		     "   expected: " (common:version-signature) "\n"
		     "   got:      " (common:get-last-run-version) "\n"
		     "   got:      " (common:get-last-run-version))
		     " to switch versions you can run: \"megatest -cleanup-db\"")
        ;; megatest -cleanup-db IS NOT correcting the dbver.  Let's force it for now.
        ;; Matt: please review this!
        (db:multi-db-sync
	(if (and (file-exists? mtconf)
		 (eq? (current-user-id)(file-owner mtconf))) ;; safe to run -cleanup-db
	    (begin
	      (debug:print 0 #f "   I see you are the owner of megatest.config, attempting to cleanup and reset to new version")
	      (handle-exceptions
         #f 
         'killservers
         'dejunk
         'new2old)
        (rmt:set-var "MEGATEST_VERSION" (common:version-signature))

	(exit 1))))
	       exn
	       (begin
		 (debug:print 0 #f "Failed to switch versions.")
		 (debug:print 0 #f " message: " ((condition-property-accessor 'exn 'message) exn))
		 (print-call-chain (current-error-port))
		 (exit 1))
	       (common:cleanup-db)))
	    (begin
	      (debug:print 0 #f " to switch versions you can run: \"megatest -cleanup-db\"")
	      (exit 1))))))

;;======================================================================
;; S P A R S E   A R R A Y S
;;======================================================================

(define (make-sparse-array)
  (let ((a (make-sparse-vector)))