Basically, this commit splits test data from the from java-txt-kt to two pairs java-txt and kt-txt.
This commit leads to some duplication in test data.
This is temporary: in the platform types branch the test data for LoadJava tests will be changed dramatically, so duplication will go away
Enum entry is now resolved into a class with a class object, which inherits
from the former class, as in the other parts of the compiler. Create a special
class EnumEntrySyntheticClassDescriptor which will be reused in deserialization
later
For static members, a corresponding package is now created for every enum, as
it's done for every other class. All static members of enum classes are
resolved into the package, EXCEPT its enum entries, valueOf() and values()
methods, which are put into the enum's class descriptor.
