Added some changes in the "getRootElement" and new "layoutlist.xml" is added for "unit-test" module.
XML parser works perfectly in the installation,only the failure of "unit-test" is left to be solved.
Some refactoring related to "layoutlist.xml" will be updated soon.

Change-Id: If7ed3af40e9b6df26e20881728181eb6c82936d8