Added missing std namespace prefix to some method parameter types
Moved TChain creation in froast tabulate to helper function
Properly implemented destructor of class Settings
Changed and reformatted documentation in util.h

Also renamed Util::match parameters
Changed use of parameter "strip" in implementation of Util::copy
Added Util::isTFileObjName and Util::splitTFileObjName
Added froast command "entries" and class TreeEntryList
Renamed class Selector to Froast

Selector is basically a collection static methods that form the
basis of the froast tool commands. Thus, Froast is a more suitable
name (also, not all of the methods are based on ROOT's TSelector).