rhel: libreswan.spec cleanup
rhel: fix debug package creation
* testing: swan-prep tries to determine testname on pwd if not specified

This saves us from needing to set/export TESTNAME and makes copying
test cases easier.
* testing: fix paste error in gateway setting for north's baseconfig
* testing: Fix north's IP address and east's nexthop for east-north cases

The configuration and documentation (testnet.png) mismatched and caused
nat-pluto-01 to fail as north could not orient itself to its bogus IP
address.
* testing: filter STP from tcpdump
* testing: remove obsoletd netjig documentation

netjig was used with uml in the past, but the current kvm setup
does not use it anymore.
* NAT-T: Added more debugging lines in DBG_NATT category