#81 Fixed uninitialized readonly values
#81 Add memset 0

A db_initValue not always initializes everything to zero - which I
didn’t realize. Added a memset that sets everything to zero.
#12 Redesign of calling procedures

This commit contains a major redesign of how calls are resolved by the
parser. The Fast::Call class is now split up in a Fast::StaticCall,
Fast::DelegateCall and a Fast::CallBuilder.

Delegates still are a TODO, as this commit broke some of the earlier
implemented functionality.