How to Build LIBSSH on Previous version like 0.9.3 or 0.9.4,

[V Sidnal, Nagraju]

Hi All,

Recently portfile.cmake  has changed, due to which I m not able to figure out 
how to revert to old version of LIBSSH for BUILDING.
Earlier there was VERSION variable in this file. Now it is not there. Please 
suggest.

Regards,
Nagraju