-mode idea

#KT-1893 Fixed

compiler/cli/src/org/jetbrains/jet/cli/jvm/compiler/CompileEnvironmentUtil.java

@@ -145,6 +145,9 @@ public class CompileEnvironmentUtil {
         else if (compilerDependencies.getCompilerSpecialMode() == CompilerSpecialMode.BUILTINS) {
             // nop
         }
+        else if (compilerDependencies.getCompilerSpecialMode() == CompilerSpecialMode.IDEA) {
+            // nop
+        }
         else {
             throw new IllegalStateException("unknown mode: " + compilerDependencies.getCompilerSpecialMode());
         }

compiler/cli/src/org/jetbrains/jet/cli/jvm/compiler/JetCoreEnvironment.java

@@ -80,7 +80,9 @@ public class JetCoreEnvironment extends JavaCoreEnvironment {
 
         CompilerSpecialMode compilerSpecialMode = compilerDependencies.getCompilerSpecialMode();
 
-        addToClasspath(compilerDependencies.getJdkJar());
+        if (compilerSpecialMode.includeJdk()) {
+            addToClasspath(compilerDependencies.getJdkJar());
+        }
 
         if (compilerSpecialMode.includeJdkHeaders()) {
             for (VirtualFile root : compilerDependencies.getJdkHeaderRoots()) {