* appdomain.c: Removed look_for_method_by_name(). Use the new method

	* appdomain.c: Removed look_for_method_by_name(). Use the new method
	mono_class_get_method_from_name() instead.

	* class-internals.h: Added two new types of wrappers.
	Added MonoRemotingTarget enum. Added new trampoline function type, which
	takes an additional MonoRemotingTarget value as parameter, so it is
	possible to request a trampoline for a specific target.

	* class.c: Added new mono_class_get_method_from_name() method.

	* class.h: In MonoRemoteClass, we can have now to vtables, one for
	general remoting sinks and one specific for cross domain calls.

	* debug-helpers.c: Added new wrapper names.

	* icall.c: Use the new method mono_remote_class_vtable() to get the vtable
	of a remote class.

	* image.c: Porperly delete value objects form the remoting invoke hashtable.

	* marshal.c: Added mono_marshal_get_xappdomain_invoke(), which together
	with several other methods (mono_marshal_get_xappdomain_dispatch,
	mono_marshal_get_xappdomain_target, mono_marshal_get_serialize_exception,
	and others) can generate a fast remoting wrapper for cross domain calls.
	More information can be found in docs/remoting.
	Other changes: Removed mono_find_method_by_name, and used
	mono_class_get_method_from_name instead.
	Remoting wrappers are now stored in a MonoRemotingMethods struct, which
	is stored in the remoting invoke hashtable.

	* marshal.h: published the new method for getting the xdomain wrapper,
	and also added a method for getting the adequate wrapper for a given
	method and target.

	* object-internals.h, object.c: Added a couple of methods for capying and
	cloning arrays.
	Modified mono_install_remoting_trampoline, which takes the new remoting
	trampoline that has a remoting target as parameter.
	mono_class_proxy_vtable now also takes a remoting target as parameter, and
	will return the most suitable vtable for the target.
	Added mono_remote_class_vtable, which returns the vtable of a remote class
	(which can be the normal remoting vtable or the xdomain vtable).

	* threads.c: the xdomain invoke and dispatch wrappers must also be
	protected against interruptions.

svn path=/trunk/mono/; revision=35965