minor baseline tweaks

- use seaside.gemtalksystems.com for Gofer and GoferProjectLoader
- use #stable version of Gofer
Merge branch 'dev' of github.com:glassdb/glass into dev
add dependency on Metacello project ... let's see how this flies
github-based Grease is required for GemStone3.2, so let's make it required for GLASS1
Merge pull request #34 from glassdb/dev

fix Grease project reference ... must use GitHub project for GemStone 3.2