Merge branch 'issue_90' into gemstone2.4

- fix Issue #90: provide option to create .ston property files
  https://github.com/dalehenrich/filetree/issues/90

Issue #90 fix
(cherry picked from commit 2d949d40153508da68aed8d58ce018a683485dea)

Conflicts:

	repository/MonticelloFileTree-Core.package/MCFileTreeAbstractStWriter.class/methodProperties.json
	repository/MonticelloFileTree-Core.package/MCFileTreeRepository.class/instance/writeRepositoryProperties.st
	repository/MonticelloFileTree-Core.package/MCFileTreeRepository.class/methodProperties.json
	repository/MonticelloFileTree-Core.package/MCFileTreeRepository.class/properties.json
	repository/MonticelloFileTree-Core.package/MCFileTreeStCypressWriter.class/instance/writeDefinitions..st
	repository/MonticelloFileTree-Core.package/MCFileTreeStCypressWriter.class/methodProperties.json
	repository/MonticelloFileTree-Core.package/monticello.meta/version
	repository/MonticelloFileTree-Tests.package/monticello.meta/version