Also assert presence of rb_thread_blocking_region
Also assert presence of rb_thread_blocking_region

ged/rbczmq,AndreasBomholtz/rbczmq,ged/rbczmq,methodmissing/rbczmq,methodmissing/rbczmq,methodmissing/rbczmq,ged/rbczmq,AndreasBomholtz/rbczmq