record specification (the implementation of size, index and operator[]
is inlined in IRecord and delegated to IRecordSpecification). It is up
to the concrete derived class to implement field() and manage its data
(e.g. within an AttributeList) in the appropriate way, in particular to
validate data values against the relevant storage type constraints.

Remove operators from derived classes, add method field() instead.


git-svn-id: file:///git/lcgcool.svndb/cool/trunk@7896 4525493e-7705-40b1-a816-d608a930855b