This fixes the following testsuite failures on ia32 when compiled with
-D_GLIBCXX_DEBUG:

FAIL: 23_containers/map/modifiers/erase/dr130-linkage-check.cc
FAIL: 23_containers/multimap/modifiers/erase/dr130-linkage-check.cc
FAIL: 23_containers/multiset/modifiers/erase/dr130-linkage-check.cc
FAIL: 23_containers/set/modifiers/erase/dr130-linkage-check.cc

The normal mode containers already use the abi-tag to mangle these
overloads differently, but the debug mode versions weren't fixed.

	* include/debug/map.h (map::erase(iterator)): Add abi-tag so that
	C++11 version mangles differently from incompatible C++98 version.
	* include/debug/multimap.h (multimap::erase(iterator)): Likewise.
	* include/debug/multiset.h (multiset::erase(iterator))
	(multiset::erase(const_iterator, const_iterator)): Likewise.
	* include/debug/set.h (set::erase(iterator))
	(multiset::erase(const_iterator, const_iterator)): Likewise.

From-SVN: r265313