Merge with reflex from CINT's repository, branch merge_reflex, plus a few modifications:

* move reflex from namespace ROOT::Reflex to namespace Reflex
* rename class Reflex::Reflex to Reflex::Instance, make Shutdown non-public, called by Reflex::Instance::~Instance()
* allow modifier masks for certain operations, e.g. Type::IsEquivalentTo()
* fix Tools::GetBasePosition() e.g. for ops
* add a few new interfaces, e.g. FunctionMember::UpdateFunctionParameterNames(), ClassBuilder::SetSizeOf()
* fix determination of FinalType() (remove _all_ typedefs, incl. function parameters etc)
* tests: make now fails for failed tests

This version of reflex is a compatibility version to be able to build both current ROOT and CINT7.
It is NOT yet the version that is meant to improve reflex's performance and reducing the size of its API.


git-svn-id: http://root.cern.ch/svn/root/trunk@21923 27541ba8-7e3a-0410-8455-c3a389f83636