add DSPManager and CMFileManager to cm

Change-Id: Idaf3bd010087da116de97e21b9738483bd4500e2
revert tools names change to remain their history of changes
tools/{add,remove}repos.py => tools/{removeprojects,addprojects}.py

Thanks to Jon for pointing out.

Change-Id: Ib84eb66805a7afe2a6c3a860daa8dd3baffbae76