removed C++ based c#, go and d code generators
binary: added embedded indep code delimiters for goto, call, etc

This code was not being translated from the indep language. Worked for existing
languages, not for java.
init _trans and _cond (for java target)
indep lang: added abstraction for gotos used in table code

Added entry block, labels, and goto labels abstraction. This allows translation
to other constructs in languages that don't have free-form goto. First
application will be Java.
first cut at java code generator