0.9.0.30: towards callbacks: static-vectors

0.9.0.30: towards callbacks: static-vectors
 * SB-INT:MAKE-STATIC-VECTOR allows direct allocation of specialized
    vectors to static space. This is eventually destined to become
    SB-EXT:MAKE-STATIC-ARRAY, but needs more frills before that --
    current setup is enough to support callbacks (and a bit more then
    that).
 * unrelated defrobnification, s/&rest/&body/ in a few places, and
    commentary on cunning punning.