Change how kotlinc and tools display their version

- Display the Kotlin version in kotlin-gradle-plugin. This is needed
  because if "-version" is specified in compiler arguments, the "info"
  level of the message printed by the compiler in CLICompiler prevents
  it from being displayed by default (unless "--debug" is passed to
  Gradle).
- Display the version of JRE the compiler is running on. This will be
  helpful to diagnose Java 9 related issues in the future.
- In CLI, also display the executable name (kotlinc-jvm or kotlinc-js)

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

@@ -119,11 +119,6 @@ public abstract class CommonCompilerArguments implements Serializable {
         return new DummyImpl();
     }
 
-    @NotNull
-    public String executableScriptFileName() {
-        return "kotlinc";
-    }
-
     public static final String WARN = "warn";
     public static final String ERROR = "error";
     public static final String ENABLE = "enable";

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JSCompilerArguments.java

@@ -88,10 +88,4 @@ public class K2JSCompilerArguments extends CommonCompilerArguments {
         arguments.moduleKind = K2JsArgumentConstants.MODULE_PLAIN;
         return arguments;
     }
-
-    @Override
-    @NotNull
-    public String executableScriptFileName() {
-        return "kotlinc-js";
-    }
 }

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

@@ -146,10 +146,4 @@ public class K2JVMCompilerArguments extends CommonCompilerArguments {
         arguments.jvmTarget = JvmTarget.DEFAULT.getDescription();
         return arguments;
     }
-
-    @Override
-    @NotNull
-    public String executableScriptFileName() {
-        return "kotlinc-jvm";
-    }
 }