Changed the default value for ENABLE_ASYNC_TASKS from true to false. The

SslEngine tasks are now executed one after the other.
This was potentially a cause of error when dealing with huge messages.

Many thanks to Jan Zelmer who has analysed the root cause of this issue
(DIRAPI-423)

Author: Emmanuel Lécharny

mina-core/src/main/java/org/apache/mina/filter/ssl/SSLHandlerG1.java

@@ -67,9 +67,9 @@
     static protected final boolean ENABLE_FAST_HANDSHAKE = true;
 
     /**
-     * Enable asynchronous tasks
+     * Enable asynchronous tasks. Default to false.
      */
-    static protected final boolean ENABLE_ASYNC_TASKS = true;
+    static protected final boolean ENABLE_ASYNC_TASKS = false;
 
     /**
      * Indicates whether the first handshake was completed