[WIP] FreeBSD Port

[Fabian Freyer]

List, All,

I have created a FreeBSD Port (attached). This builds and
installs d693cc6
<https://github.com/strophe/libstrophe/commit/d693cc6d1572d69c93b4e398008e328a9c5876a5>(0.8.6)
including patches for #30
<https://github.com/strophe/libstrophe/pull/30> and #37
<https://github.com/strophe/libstrophe/pull/37> on FreeBSD.
I'd like to ask for feedback on this.
Also would anyone be willing to maintain / help maintain this port?

Regards,
Fabian Freyer