[Bug libstdc++/51008] GTHR - extend interface with __gthread_recursive_mutex_destroy

[andvgal at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51008

--- Comment #1 from Andrey Galkin <andvgal at gmail dot com> 2011-11-07 13:52:36 UTC ---
* The problem is in incompatible types when __gthread_mutex_destroy is called
instead of __gthread_recursive_mutex_destroy (missing in the default interface)
in __recursive_mutex::_S_destroy.