class Build::Files::Composite

def initialize(files, roots = nil)
	@files = []
	
	files.each do |list|
		if list.kind_of? Composite
			@files += list.files
		elsif List.kind_of? List
			@files << list
		else
			# Try to convert into a explicit paths list:
			@files << Paths.new(list)
		end
	end
	
	@files.freeze
	@roots = roots
end