- remove warning due to -Wshadow

- rename variable "Name" to "name"
- rename also methods like a(), b() , x() to X() , A(), B() to be consistent with ROOT coding convention


git-svn-id: http://root.cern.ch/svn/root/trunk@23522 27541ba8-7e3a-0410-8455-c3a389f83636