GenerationState refactored to be (almost) immutable and methodless (modulo little protection from reuse)

GenerationStrategy introduced to handle separately cases of regular compilation and building of JetLightClasses (this was only real overridable behavior of GenerationState in old code)
state subpackage introduced

compiler/tests/org/jetbrains/jet/codegen/GenerationUtils.java

@@ -21,6 +21,8 @@ import com.intellij.openapi.project.Project;
 import com.intellij.psi.PsiFile;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.jet.analyzer.AnalyzeExhaust;
+import org.jetbrains.jet.codegen.state.GenerationState;
+import org.jetbrains.jet.codegen.state.GenerationStrategy;
 import org.jetbrains.jet.lang.BuiltinsScopeExtensionMode;
 import org.jetbrains.jet.lang.psi.JetFile;
 import org.jetbrains.jet.lang.resolve.AnalyzerScriptParameter;
@@ -29,6 +31,8 @@ import org.jetbrains.jet.lang.resolve.java.AnalyzerFacadeForJVM;
 import java.util.Collections;
 import java.util.List;
 
+import static org.jetbrains.jet.codegen.context.CodegenBinding.registerClassNameForScript;
+
 /**
  * @author Stepan Koltsov
  */
@@ -61,7 +65,7 @@ public class GenerationUtils {
     public static GenerationState compileFilesGetGenerationState(@NotNull Project project, @NotNull AnalyzeExhaust analyzeExhaust, @NotNull List<JetFile> files) {
         analyzeExhaust.throwIfError();
         GenerationState state = new GenerationState(project, ClassBuilderFactories.TEST, analyzeExhaust, files);
-        state.compileCorrectFiles(CompilationErrorHandler.THROW_EXCEPTION);
+        GenerationStrategy.STANDARD.compileCorrectFiles(state, CompilationErrorHandler.THROW_EXCEPTION);
         return state;
     }
 }