Fix encoding, fix bugs.

Author: dim-s

src-jvm/main/java/php/pkg/twig/classes/TwigEngine.java

@@ -94,7 +94,7 @@ public Reader getReader(String cacheKey, IObject loader) {
         try {
             return new InputStreamReader(Stream.getInputStream(
                     env, env.invokeMethod(loader, "read", StringMemory.valueOf(cacheKey))
-            ));
+            ), env.getDefaultCharset());
         } catch (Throwable throwable) {
             env.forwardThrow(throwable);
             return null;

src-jvm/main/java/php/pkg/twig/support/JPHPExtension.java

@@ -47,9 +47,9 @@ public Object evaluate() {
                             }
                         }
 
-                        return memory;
+                        return Memory.unwrap(env, memory);
                     } else {
-                        return instance.callMethodAny(env, attributeName, argumentValues);
+                        return Memory.unwrap(env, instance.callMethodAny(env, attributeName, argumentValues));
                     }
                 } catch (Throwable e) {
                     if (e instanceof BaseError) {
@@ -81,7 +81,7 @@ private ResolvedAttribute resolve(Memory instance, String attributeName, Object[
             return new ResolvedAttribute() {
                 @Override
                 public Object evaluate() {
-                    return instance.valueOfIndex(attributeName);
+                    return Memory.unwrap(env, instance.valueOfIndex(attributeName));
                 }
             };
         }