Minor, removed redundant argument

from ClassBodyCodegen.generateDeclaration
Stashing wereReifiedMarkers value

before starting codegen from InlineCodegen and function literal
Do not mark class as needReification

in case it contains reifier's markers only within
methods that define these reified parameters
i.e. will be inlined
Extracted wereReifiedUsageOfTypeParameter and

extended description of it's current semantics
Report to codegen when inlined code still contains something to reify