Added SIMPLEQ_FOREACH_SAFE
Changed SIMPLEQ_FOREACH_SAFE arguments order
Merge pull request #3 from eugpermar/master

Added SIMPLEQ_FOREACH_SAFE

With FreeBSD syntax (tmpelement last)
Clear avl_node memory before insert
rdlru.h needs to include rdthread.h, because rd_mutex_t used
Merge pull request #4 from eugpermar/master

rdlru.h needs to include rdthread.h, because rd_mutex_t used