Issue #102: Add scripting-definition support

'MonticelloFileTree-Core-topa.163' message 'Issue #102 Add scripting-definition support'
'MonticelloFileTree-Tests-topa.43' message 'Merge. Add tests for Issue #102: Scripting definitons'

Conflicts:
	repository/MonticelloFileTree-Core.package/monticello.meta/version
FileDirectory -> FileStream; Removal-scripts are unsupported on Pharo2.0
Merge pull request #106 from krono/krono/issue_102/pharo2.0

Pharo part of scripting.