[Bug libitm/63907] libitm/config/posix/rwlock.cc doesn't compile

[dvitek at grammatech dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63907

--- Comment #13 from David Vitek <dvitek at grammatech dot com> ---
Created attachment 43639
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43639&action=edit
hack for g++4.5.3 and old libc compatibility

This is a nasty hack and you should check that your system's definition of
PTHREAD_COND_INITIALIZER is all zeroes before using it.