KT-422 Tune literal typing rules so that varargs overloaded by primitive types work

#KT-422 fixed

compiler/testData/diagnostics/tests/varargs/kt422.kt

@@ -0,0 +1,17 @@
+// KT-422 Tune literal typing rules so that varargs overloaded by primitive types work
+
+fun foo<T>(vararg t : T) = t
+fun foo(vararg a: Int) = a
+fun foo(vararg a: Long) = a
+
+fun test() {
+    foo(1, 2, 3) // Error, but should be foo of ints
+}
+
+fun <T> array(vararg elements : T) = elements
+fun array(vararg elements : Int) = elements
+
+fun test1() {
+    array("A", "A")
+    array(1, 1)
+}