Added tests on link stage (disabled for now).

backend.native/tests/codegen/inline/defaultArgs_linkTest_lib.kt

@@ -0,0 +1,3 @@
+package a
+
+inline fun foo(x: Int, y: Int = 117) = x + y

backend.native/tests/codegen/inline/defaultArgs_linkTest_main.kt

@@ -0,0 +1,6 @@
+import a.*
+
+fun main(args: Array<String>) {
+    println(foo(5))
+    println(foo(5, 42))
+}