Rename aispoll.h so that people using the aispoll header file do not
collide with sys/poll.h.

BKrev: 40ef0fadvg4jQb-J9VhBM25mh_mdMQ


git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@88 fd59a12c-fef9-0310-b244-a6a79926bd2f