Add overrides by name. (#54)

backend.native/tests/build.gradle

@@ -188,11 +188,10 @@ task hello2(type: RunKonanTest) {
     source = "runtime/basic/hello2.kt"
 }
 
-/* TODO: enable, once can call toString() on Int.
 task hello3(type: RunKonanTest) {
-    goldValue = "239"
+    goldValue = "239\ntrue\n3.14159\nA\n"
     source = "runtime/basic/hello3.kt"
-} */
+}
 
 task tostring0(type: RunKonanTest) {
     goldValue = "127\n255\n239\nA\n1122334455\n112233445566778899\n1E+27\n1E-300\ntrue\nfalse\n"

backend.native/tests/runtime/basic/hello3.kt

@@ -1,3 +1,7 @@
 fun main(args : Array<String>) {
-    print(239)
+    println(239)
+    // TODO: enable, once override by name is implemented.
+    println(true)
+    println(3.14159)
+    println('A')
 }

runtime/src/main/kotlin/kotlin/io/Console.kt

@@ -3,14 +3,82 @@ package kotlin.io
 @kotlin.SymbolName("Kotlin_io_Console_print")
 external public fun print(message: String)
 
-/*
-public fun print(message: Int) {
+/* TODO: use something like that.
+public fun<T> print(message: T) {
     print(message.toString())
 } */
+public fun print(message: Byte) {
+    print(message.toString())
+}
+
+public fun print(message: Short) {
+    print(message.toString())
+}
+
+public fun print(message: Char) {
+    print(message.toString())
+}
+
+public fun print(message: Int) {
+    print(message.toString())
+}
+
+public fun print(message: Long) {
+    print(message.toString())
+}
+
+public fun print(message: Float) {
+    print(message.toString())
+}
+
+public fun print(message: Double) {
+    print(message.toString())
+}
+
+public fun print(message: Boolean) {
+    print(message.toString())
+}
 
 @kotlin.SymbolName("Kotlin_io_Console_println")
 external public fun println(message: String)
 
+// TODO: enable, once override by name is implemented.
+public fun println(message: Byte) {
+    println(message.toString())
+}
+
+public fun println(message: Short) {
+    println(message.toString())
+}
+
+public fun println(message: Char) {
+    println(message.toString())
+}
+
+public fun println(message: Int) {
+    println(message.toString())
+}
+
+public fun println(message: Long) {
+    println(message.toString())
+}
+
+public fun println(message: Float) {
+    println(message.toString())
+}
+
+public fun println(message: Double) {
+    println(message.toString())
+}
+
+public fun println(message: Boolean) {
+    println(message.toString())
+}
+/* TODO: use something like that.
+public fun<T> println(message: T) {
+    print(message.toString())
+} */
+
 @kotlin.SymbolName("Kotlin_io_Console_println0")
 external public fun println()