Port to FreeBSD

I have ported Open Cascade v. 6.2 to FreeBSD.
Since the platform is tested in many files, this requires a lot of patches!
If would be fine it you could import these patches in your next release.
Don't hesitate to contact me for any question!

Th. Thomas

Link: http://people.freebsd.org/~thierry/ports/opencascade_FreeBSD-6.2.diff
Discussions: FreeBSD port after STLport update to 5.1.4