Merge pull request #5 from mstorck/patch-4

Update amprupdate.py to disable keepalive packets and clamp-tcp-mss=yes
Merge pull request #6 from mstorck/patch-5

Update amprupdate.py to use [find] when deleting interfaces.
Abort when too many routes change.

Should prevent another instance like the Great Route Purge of Nov 18 2014.
Merge branch 'master' of https://github.com/HamWAN/hamwan_scripts into HamWAN-master
Merge branch 'HamWAN-master'