PDD21 revision, per p6i discussion.  (More remains.)  * Replace untyped interface with "does hash".  * Replace impossible varargs with arrays in PMC methods  * Clarify that no wildcard export support will be provided in    base Parrot namespace.  (Some derivations might have it.)
PDD21 revision, per p6i discussion.  (More remains.)
 * Replace untyped interface with "does hash".
 * Replace impossible varargs with arrays in PMC methods
 * Clarify that no wildcard export support will be provided in
   base Parrot namespace.  (Some derivations might have it.)

git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@11342 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

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