backend: rework builtIns configuration

* Do not create separate builtIns for analyzer.
* Make builtInsModule synthetic but depending on stdlib.

backend.native/cli.bc/src/org/jetbrains/kotlin/cli/bc/K2Native.kt

@@ -55,6 +55,7 @@ class K2Native : CLICompiler<K2NativeCompilerArguments>() {
         with (KonanConfigKeys) { with (configuration) {
 
             put(NOSTDLIB, arguments.nostdlib)
+            put(COMPILE_AS_STDLIB, arguments.compileAsStdlib)
             put(NOLINK, arguments.nolink)
             put(LIBRARY_FILES, 
                 arguments.libraries.toNonNullList())

backend.native/cli.bc/src/org/jetbrains/kotlin/cli/bc/K2NativeCompilerArguments.java

@@ -31,6 +31,9 @@ public class K2NativeCompilerArguments extends CommonCompilerArguments {
     @Argument(value = "nostdlib", description = "Don't link with stdlib")
     public boolean nostdlib;
 
+    @Argument(value = "compile_as_stdlib", description = "Compile the module as stdlib")
+    public boolean compileAsStdlib;
+
     @Argument(value = "opt", description = "Enable optimizations during compilation")
     public boolean optimization;