bug#16255: C-h p C-s games RET (package-show-package-list?) misses most of the games

[Ivan Shmakov <ivan@siamics.net>]

Package:  emacs
Severity: minor

	As of 84b50168 [1], C-h p C-s games RET lists only a few games
	of those coming with Emacs:

  Package            Version      Status ▼   Archive    Description
  dunnet             2.1          built-in              text adventure for Emacs
  gamegrid           1.2          built-in              library for implementing grid-based games on Emacs
  tetris             2.1          built-in              implementation of Tetris for Emacs

[1] http://git.savannah.gnu.org/cgit/emacs.git/commit/?id=84b50168

	As it seems, package-show-package-list is given all the games
	found, yet it fails to render them in the resulting *Packages*
	buffer, perhaps because of them missing the Version: metadata.

	As per M-x trace-function-background:

1 -> (package-show-package-list (zone tetris studly spook solitaire snake pong mpuz morse meese life landmark hanoi gomoku gametree gamegrid fortune dunnet doctor dissociate decipher cookie1 bubbles blackbox animate 5x5))
1 <- package-show-package-list: #<buffer *Packages*>

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