#56: fix correct destructor test output and handle coroutine context in garbage collection

Author: EdmondDantes

tests/gc/011-gc_destructor_cycles_with_suspend.phpt

@@ -80,9 +80,9 @@ After GC
 Destructor start: object-B
 Suspended in destructor: object-B
 Still has reference to: object-A
-Test complete
-Destructor end: object-B
 Destructor start: object-A
 Suspended in destructor: object-A
 Still has reference to: object-B
+Test complete
+Destructor end: object-B
 Destructor end: object-A

tests/gc/012-gc_destructor_multiple_gc_cycles.phpt

@@ -91,8 +91,8 @@ Created: batch2-B
 Total destructors called: 2
 Destructor start: batch2-A (count: 3)
 Suspended in destructor: batch2-A
-Test complete
-Destructor end: batch2-A
 Destructor start: batch2-B (count: 4)
 Suspended in destructor: batch2-B
+Test complete
+Destructor end: batch2-A
 Destructor end: batch2-B