Add option to restore fallback to compiler built-ins + resurrect Maven build

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JVMCompilerArguments.java

@@ -101,6 +101,9 @@ public class K2JVMCompilerArguments extends CommonCompilerArguments {
     @Argument(value = "Xsingle-module", description = "Combine modules for source files and binary dependencies into a single module")
     public boolean singleModule;
 
+    @Argument(value = "Xadd-compiler-builtins", description = "Add definitions of built-in declarations to the compilation classpath (useful with -no-stdlib)")
+    public boolean addCompilerBuiltIns;
+
     @Argument(value = "Xinterface-compatibility", description = "Generate DefaultImpls classes for interfaces in JVM target bytecode version 1.8 for binary compatibility with 1.6")
     public boolean interfaceCompatibility;
 

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/K2JVMCompiler.kt

@@ -333,6 +333,7 @@ class K2JVMCompiler : CLICompiler<K2JVMCompilerArguments>() {
             configuration.put(CLIConfigurationKeys.ALLOW_KOTLIN_PACKAGE, arguments.allowKotlinPackage)
             configuration.put(CLIConfigurationKeys.REPORT_PERF, arguments.reportPerf)
             configuration.put(JVMConfigurationKeys.USE_SINGLE_MODULE, arguments.singleModule)
+            configuration.put(JVMConfigurationKeys.ADD_BUILT_INS_TO_DEPENDENCIES, arguments.addCompilerBuiltIns)
 
             arguments.declarationsOutputPath?.let { configuration.put(JVMConfigurationKeys.DECLARATIONS_JSON_PATH, it) }
         }

compiler/testData/cli/jvm/extraHelp.out

@@ -9,6 +9,7 @@ where advanced options include:
   -Xskip-metadata-version-check Try loading binary incompatible classes, may cause crashes
   -Xdump-declarations-to <path> Path to JSON file to dump Java to Kotlin declaration mappings
   -Xsingle-module            Combine modules for source files and binary dependencies into a single module
+  -Xadd-compiler-builtins    Add definitions of built-in declarations to the compilation classpath (useful with -no-stdlib)
   -Xinterface-compatibility  Generate DefaultImpls classes for interfaces in JVM target bytecode version 1.8 for binary compatibility with 1.6
   -Xno-inline                Disable method inlining
   -Xrepeat <count>           Repeat compilation (for performance analysis)