A non-generic function is always more speciic than a generic function

Example:
fun <T> array(vararg array : T) = array
fun array(vararg array : Char) = array

fun test() {
    array('1', '2') // ambiguity
}

compiler/testData/checkerWithErrorTypes/quick/GenericFunctionIsLessSpecific.jet

@@ -0,0 +1,8 @@
+// A generic funciton is always less specific than a non-generic one
+fun foo<T>(t : T) : Unit {}
+fun foo(i : Int) : Int = 1
+
+fun test() {
+    foo(1) : Int
+    foo("s") : Unit
+}