fixes for packages that require openssl

[Aleksey Cheusov <cheusov%tut.by@localhost>]

net/ftplibpp, security/hydan and databases/libgnomedb
fail on Linux

http://mova.org/~cheusov/pub/pkgsrc-distbb/Linux/current/log/20080914.1141-new-report/ftplibpp-1.0.1nb1/stage_build.html
http://mova.org/~cheusov/pub/pkgsrc-distbb/Linux/current/log/20080914.1141-new-report/hydan-0.13/stage_build.html
http://mova.org/~cheusov/pub/pkgsrc-distbb/Linux/current/log/20080914.1141-new-report/libgnomedb-3.0.0nb2/stage_build.html
http://mova.org/~cheusov/pub/pkgsrc-distbb/Linux/current/log/20080914.1141-new-report/netbiff-0.9.18/stage_build.html

because they cannot find openssl headers.

To fix this

    .include "../../security/openssl/buildlink3.mk"

is needed.

-- 
Best regards, Aleksey Cheusov.