ipsec-tools: remove the ipsec_doi-0.7.3.c.

It seems that the compatibility issue can be fixed by marking out
two lines of code in ipsec_doi.c, so ipsec_doi-0.7.3.c is no longer
needed. Here ipsec-tools is finally completely updated to 0.8.0. :)

Change-Id: Ic2b2f1cee48139a18a3978de572131af5c264c92
5 files changed