_GLIBCXX_DEBUG with v7 namespace (bug 55028)

[Oleg Smolsky]

Hi, below is a patch for Bug 55028. My tests link now, yet, more symbols 
may need to be exposed...

Could someone check please?

Thanks!
Oleg.

--- abi/pre/gnu-versioned-namespace.ver (revision 192953)
+++ abi/pre/gnu-versioned-namespace.ver (working copy)
@@ -116,6 +116,13 @@
_ZN11__gnu_debug19_Safe_sequence_base22_M_revalidate_singularEv;
      _ZN11__gnu_debug19_Safe_sequence_base7_M_swapERS0_;

+    # __gnu_debug::_Safe_unordered_container_base and 
_Safe_local_iterator_base
+    _ZN11__gnu_debug30_Safe_unordered_container_base7_M_swapERS0_;
+ _ZN11__gnu_debug30_Safe_unordered_container_base13_M_detach_allEv;
+ 
_ZN11__gnu_debug25_Safe_local_iterator_base9_M_attachEPNS_19_Safe_sequence_\
+baseEb;
+    _ZN11__gnu_debug25_Safe_local_iterator_base9_M_detachEv;
+
      _ZN11__gnu_debug19_Safe_iterator_base9_M_attach*;
      _ZN11__gnu_debug19_Safe_iterator_base16_M_attach_single*;
      _ZN11__gnu_debug19_Safe_iterator_base9_M_detachEv;