<IMPL_SUFFIX> for method is a method signature hash,
if method value parameter types contain inline class types,
otherwise 'impl'.
Constructor methods are named as 'constructor-<IMPL_SUFFIX>'.
Synthesized 'box' and 'unbox' methods are named as
'<METHOD_NAME>-<IMPL_SUFFIX>'.
Erased implementations of overriding and non-overriding methods
are named as '<METHOD_NAME>-<IMPL_SUFFIX>'.
Fully specialized implementation of 'equals' will have a special suffix.
We might want to add 'init' blocks later, so now, for the sake of
binary compatibility with 1.3-RC binaries, we have to generate these
'constructor' calls.
Note that in some tests inline class boxing is no longer redundant,
because resulting value is passed to 'constructor' as an argument.
