* include/bits/c++config: Simplify debug namespaces.
	* include/ext/hash_set: Specialize insert_iterator after norm,
	debug containers have been (optionally) declared. Use nested
	namespaces.	
	* include/ext/hash_map: Same.
	* include/debug/hash_map.h (insert): Add specialization for value
	pointer types.
	* include/debug/hash_set.h (insert): Same.
	* include/debug/hash_multimap.h: Change __gnu_debug_def to __debug.
	* include/debug/set.h: Same.
	* include/debug/bitset: Same.
	* include/debug/multiset.h: Same.
	* include/debug/hash_multiset.h: Same.
	* include/debug/vector: Same.
	* include/debug/map.h: Same.
	* include/debug/deque: Same.
	* include/debug/list: Same.
	* include/debug/multimap.h. Same.
	* include/debug/macros.h: Use __gnu_debug.
	* include/debug/debug.h: Same.
	* include/debug/formatter.h: Same.
	* include/debug/safe_sequence.h: Same.
	* include/debug/functions.h: Same.
	* include/debug/safe_base.h: Same.
	* include/debug/safe_iterator.h: Same.
	* include/debug/safe_iterator.tcc: Same.
	(_M_invalidate): Adjust compare order.
	* include/debug/string: Change std::__gnu_debug to __gnu_debug.
	* include/ext/hashtable.h: Formatting fixes.
	* include/bits/stl_map.h: Formatting fixes.		
	* src/compatibility.cc: Adjust compatibility symbols for old debug
	mode model.	
	* src/debug_list.cc: Tweak.
	* src/debug.cc: Adjust namespaces.
	* docs/html/debug_mode.html: Adjust namespace names.
	* testsuite/25_algorithms/heap/heap.cc: Restore _GLIBCXX_DEBUG
	macro guards, as count values differ when in debug mode.	
	* testsuite/23_containers/vector/26412.cc: Move to...
	* testsuite/23_containers/vector/26412-1.cc: ... here.
	* testsuite/23_containers/vector/26412-2.cc: Add.

	* include/ext/pb_assoc/detail/standard_policies.hpp
	(PB_ASSOC_HASH_NAMESPACE): Remove, use __gnu_cxx::hash_map and
	std::equal_to.

	* configure.ac (libtool_VERSION): To 6:8:0.
	* configure: Regenerate.
	* config/abi/pre/gnu.ver: Revert to exporting __gnu_debug symbols.
	(GLIBCXX_3.4.8): New.
	* testsuite/testsuite_abi.cc: Add GLIBCXX_3.4.8 to known versions.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@111356 138bc75d-0d04-0410-961f-82ee72b054a4