portability to even older versions of glass (1.0-beta.8.1)
update mcz file
simplify error reporting
bootstrap Metacello #previewBootstrap BEFORE attempting to load GLASS 1.0-beta.9.2, since Grease uses new construct (issue in GemStone 3.1.0.2 only)
GLASS1 should be loading cleanly and passing tests for all versions of GemStone (2.4.4.1-2.4.5.2, 3.0.1, 3.1.0.2-3.2.2)