[Koha] Z39.50

[Tonnesen Steve]

Just let me know if you are getting sick of my posts.  :)

Cleaned up the interface quite a bit.  Separated out the "uploaded marcs"
from the "Z39.50 Searches".

You can now specify which Z39.50 servers to query.  I have the LOC and the
NLC hard coded in, but I'd like to make those configurable for each
installation of Koha.  You can also now specify an arbitrary Z39.50 server
for each query.  The format is:

z3950.loc.gov:7090/voyager
amicus.nlc-bnc.ca:210/AMICUS

etc.


One thing I don't like about all of this is that it requires that the YAZ
libraries be installed.  That adds an extra step to the installation of
Koha, although I don't think the YAZ license would restrict us from
distributing it directly with Koha.

Steve.