moved away from Reflex to edm ...WithDict classes to make CondCore/DBCommon build.
round zero of Conditions migration to root6 - most simple things moved to new edm *WithDict classes
more work on moving away from Reflex.
Moved to use recipes from Bill and Paul for ObjectWithDict::invoke()
added helper functions to implement BaseSize(), BaseAt(index) and DataMemberAt(index)
according to Bill's recipe
Renamed a few isArray() calls back to IsArray() to make the error messages homogeneous
another round of changes for the migration from reflex to root-6
added src/CondProperties.h which is a generated map containing for each class
the properties from the class_def.xml files.
src/RflxCollProxy.h still needs the implementations for all methods.
next round in move from reflex to root6. fixed more build errors. moved away from CondProperties to use TClassAttributeMap as suggested by Paul
Merge pull request #1603 from apfeiffer1/ap-root6-condMigration

ROOT 6 -- First pass on migration from Reflex to ROOT6 for Conditions.