Fixed target mcz - exit Smalltalk after all packages are exported.

Use #deepCopy instead of #copy when copying RB parse tree ...because #copy make a copy if child nodes but does not set their parents properly. Therefore node replacing does not work because it replaces it in wrong tree (original, not the copy).

Codegen: added support for smart action node compiling. Avoid creation of intermediate result collection for action nodes if all references to action block's argument (i.e., the nodes collection) is in form of: * <nodes> at: <numeric constant> * <nodes> first (second, third...

Oops, renamed testMappedNode3/4/5 to testActionNode3/4/5 which is the correct name!

Fix in codegen for inlined sequence nodes. For inlined sequence nodes, generate nested ifs rather than sequential code which does not work when inlined. The reason is that #codeReturn: in inline generates instvar assignment, not method return, so in sequential code the next child of a sequence will be probed even if previous failed. If that happends, the whole sequence fail and therefore we must generate nested ifs to correctly handle this w.r.t. inlining.

Avoid creation of intermediate collection for mapped action nodes.

Fix in codegen: fixed compilation of unknown node: do not hardcode return variable name ...use `self retvalVar` instead

Renamed #codeStoreValueOf:intoVariable: to #codeAssignParsedValueOf:to: to use same naming as #codeAssign:to:

Fixed codegen for empty (mapped) action block. Although empty blocks are useless in practice, they may occur (and do occur in tests)

Do not create intermediate collection when parsing sequence if not necesary. The collection is not needed when the result of a choice is being used in mapped parser. In that case, store parsed objects in variables and inline action code to use these variables to access parsed objects.