Rework C bindings generator to pure descriptor-based system. (#1193)

backend.native/tests/build.gradle

@@ -2352,7 +2352,9 @@ task produce_dynamic(type: DynamicKonanTest) {
                 "Child.fooParam: c 3\n" +
                 "Impl1.I: d 4 Impl1\n" +
                 "Impl2.I: e 5 Impl2\n" +
-                "String is Kotlin/Native\n"
+                "String is Kotlin/Native\n" +
+                "RO property is 42\n" +
+                "RW property is 239\n"
 }
 
 task buildKonanTests(type: BuildKonanTest) {

backend.native/tests/produce_dynamic/simple/hello.kt

@@ -16,6 +16,13 @@ open class Base {
 
 class Child : Base() {
     override fun fooParam(arg0: String, arg1: Int) = println("Child.fooParam: $arg0 $arg1")
+
+    val roProperty: Int
+        get() = 42
+
+    var rwProperty: Int = 0
+        get() = field
+        set(value) { field = value + 1 }
 }
 
 // Interface.

backend.native/tests/produce_dynamic/simple/main.c

@@ -25,6 +25,10 @@ int main(void) {
 
     printf("String is %s\n", string);
 
+    printf("RO property is %d\n", __ kotlin.root.Child.get_roProperty(child));
+     __ kotlin.root.Child.set_rwProperty(child, 238);
+    printf("RW property is %d\n", __ kotlin.root.Child.get_rwProperty(child));
+
     __ DisposeString(string);
     __ DisposeStablePointer(base.pinned);
     __ DisposeStablePointer(child.pinned);