Report error on using reflection without kotlin-reflect.jar in classpath

Should be a warning because strictly speaking, the codegen doesn't need it
during the compilation. It's an error at the moment only to let all clients of
Kotlin reflection know that they must include kotlin-reflect.jar in the
classpath

compiler/testData/cli/jvm/noReflectionInClasspath.kt

@@ -0,0 +1,4 @@
+class Foo(val prop: Any)
+
+fun t1() = Foo::prop
+fun t2() = Foo::class