Faster package registration

[Stephen Montgomery-Smith]

For those of you who didn't follow the thread where we did this, Alexander 
Leidinger and I have made modifications to the port registration process 
that make it significantly faster for ports with many dependencies.  Sorry 
for tooting our horn a bit, but I am really excited about this and I want 
people to know:

http://www.freebsd.org/cgi/query-pr.cgi?pr=112630
http://www.freebsd.org/cgi/query-pr.cgi?pr=112765

Stephen