Fix out-of-bounds accesses to trans->conn_requests[]

Signed-off-by: Simon Derr <simon.derr@bull.net>
configure.ac: check for rdma_cma instead of rdma_verbs (not present on older rdmacm releases and not using it)
configure.ac: remove AC_DISABLE_STATIC as static libs are needed for make rpm
configure.ac: add a git abbrev commit id to rpm name
rcat/rmitm: Fix ignoring return value warnings
destroy_trans: Allow trans that aren't completely connected/listening to be closed as well
Make rpm should not override user _topdir
rmitm: use pcap
Fix trans_destroy hanging on error
rmitm: saves packets as TCP, using rmitm server port instead of real one
rmitm: remove SGE, add another lock to prevent packet being overwritten before being dumped to disk
rmitm: add checksum
lock a bit earlier to avoid acking packets before they are written
rcat/rmitm: use gethostbyname