Added some citations to tech report.
Unfinished work on refactoring task template builder and friends
Merge branch 'master' of www:/repos/git/Workflow/ducttape

Conflicts:
	src/main/scala/ducttape/workflow/builder/WorkflowBuilder.scala
More refactoring of TaskTemplateBuilder
More refactoring - adding SourceSpecInfo class to encapsulate some data.
Fix #138: Allow comments after import statements