[strongSwan] disable ah4 module

[rakesh bansod]

hi,
     I want to use strongswan on kernel 2.6.39.4, and i dont want to use 
the ah feature. how to disable the the ah feature while installation. or 
it can be  avoided by just commenting
"modprobe -qv ah4" line in netkey.c

please reply.

thank you,
Rakesh