Diagnostics test: array creation of non-reified TP

 #KT-1370 Fixed
Do not report a warning on an inline function with a reified parameter

 #KT-6273 Fixed
Moved DiagnosticFactories about reified to

``Type parameter declarations'' block
Minor, removed redundant argument

from ClassBodyCodegen.generateDeclaration
Got rid of hack with stashing wereReified

1. Made ClosureCodegen extending MemberCodegen
2. Made ClosureContext extending ClassContext
Wrap parentCodegen before generating from inline
Supported nested reified parameter declarations

Also switched to using type names as identifiers instead of their
indices