re PR c++/52924 (Using an std::function object as deleter of shared_ptr in C++0x mode does not compile)

	PR libstdc++/52924
	* include/bits/shared_ptr_base.h (_Sp_counted_deleter): Add
	user-defined destructor.
	(_Sp_counted_inplace): Likewise.
	* testsuite/20_util/shared_ptr/cons/52924.cc: New.
	* testsuite/20_util/shared_ptr/cons/43820_neg.cc: Adjust dg-error
	line numbers.

From-SVN: r186363