debug/gdb: update the version strings

Almost all versions have been renamed, but the gdb folks did not
setup legacy symlinks.

For more information, see this message:
http://sourceware.org/ml/gdb/2011-09/msg00002.html

Reported-by: ManuelStahl <manuel.stahl@iis.fraunhofer.de>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from 32209f462bbb35f3e3c7b260dc643e1183bdd710)

--- glibc-2_9.orig/nptl/init.c	2007-10-15 22:25:25.000000000 +0200

+++ glibc-2_9/nptl/init.c	2010-08-18 10:46:06.109098646 +0200

@@ -236,7 +236,7 @@

 /* This can be set by the debugger before initialization is complete.  */

-static bool __nptl_initial_report_events;

+static bool __nptl_initial_report_events __attribute_used__;

 void

 __pthread_initialize_minimal_internal (void)