drd/tests: Add test program that makes sem_trywait() return a non-zero value
(provided by Graham Whitted <7wz69ejteg@snkmail.com> - see also #305690).


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12896 a5019735-40e9-0310-863c-91ae7b9d1cf9
4 files changed