* object.h: Added call_type field to MonoMethodMessage and the corresponding

	* object.h: Added call_type field to MonoMethodMessage and the corresponding
	enumeration of values. Removed fields to store remote call output values in
	MonoAsyncResult. Not needed any more.
	* object.c: Initialize call_type and async_result fields in mono_message_init.
	* marshal.c: mono_delegate_begin_invoke(): for proxies, set call_type before
	dispatching the message.
	mono_delegate_end_invoke (): delegate to the proxy the work of waiting for the
	async call to finish. To do it use a message with EndInvoke call type.

svn path=/trunk/mono/; revision=17580