This patch merges the code for getting name, value and type of
varobj children for C++ into one function, just like the previously
posted patch for C.

This was manually tested from KDevelop. We really need tests
for MI C++ functionality, and I plan to write them, but only
after my patch that makes it possible to write MI tests using
just C files is approved.

Is this patch OK provided that tests will be writted before committing?

- Volodya

	Refactor getting children name, value and type access 
	for varobjs in C++.
	* value.c (value_as_address): Use coerce_array_proper
	instead of coerce_array so that not fail for references.
	(coerce_array_proper): New function.
	(coerce_array): Use the above.
	* value.h (coerce_array_proper): Declare.
	* valops.c (value_ind): Handle references.
	* varobj.c (adjust_value_for_children_access): New.
	(c_describe_child): Use the above.
	(enum accessibility): New.
	(match_accessibility): New function.
	(cplus_describe_child): New function.
	(cplus_name_of_child, cplus_value_of_child)
	(cplus_type_of_child): Reimplement in terms
	of cplus_describe_child.