Basic -Xrelease option support

#KT-29974 Fixed

compiler/testData/codegen/boxModernJdk/testsWithJava17/releaseFlag/constable/constable.kt

@@ -0,0 +1,16 @@
+// CHECK_BYTECODE_TEXT
+// 2 CHECKCAST java/lang/constant/Constable
+// 1 LOCALVARIABLE constable Ljava/lang/constant/Constable;
+
+import java.lang.invoke.*
+
+fun cond() = true
+
+fun test(mh: MethodHandle?, mt: MethodType?) {
+    val constable = if (cond()) mh else mt
+}
+
+fun box(): String {
+    test(null, null)
+    return "OK"
+}