Change xml format and list format.
Modified doctest.
infomanager.py is splited between the funcftion 'humanReadable' and others.
details of read and save xml files in infomanage.py are moved to etreeio.py.
Refactoring.
Rename some function and Update doctest.
Rename to lowercase with underscore.
Pipe must return node_list about issue #5
split line for limitation of line length.
Rename function and add docstring.
Refine path expansion.
Merge branch 'develop' into change-xml-form

Conflicts:
	lib/dataprocessor/pipes/infomanager.py
Merge pull request #5 from kenbeese/change-xml-form

Support new format of internal list in infomanager