remove comments ... only needed for the docs, methinks
simplification of ServiceVM example without breaking existing stuff

- build new vm hierarchy under WAGemStoneAbstractServiceVM which
  is basically WAGemStoneServiceVMTask reafactored to support
  multiple subclasses
  - new classes WAGemStoneServiceExampleVM (for old example) and
    WAGemStoneServiceVM (for new example which will be built upon
    Nick's WAGemStoneServiceTask; block-based and much simpler
- restore Seaside-GemStone-ServiceTask-NickAger.20
  - implementation of WAGemStoneServiceVMTask left alone in
    case folks are using it in production ... evenutally they
    should convert and until then ..
Seaside-GemStone-ServiceTask is already in Seaside31 config
Merge branch 'master' of github.com:glassdb/ServiceVM