1st scripts for MARC-DB.

1st scripts for MARC-DB.

WARNING : YOU MUST DO THE FOLLOWING IF YOU EXPECT THE MAIN-BRANCH TO WORK.

* install MARC::Record package, from cpan or sourceforge
* OVERWRITE File.pm and USMARC.pm. The original misses 1 functionnality we absolutly need in koha (reading a MARC from a variable, not from a file). Thanks to Steve, who modified MARC::Record.
* modify your DB by adding marcschema.sql tables
* populate new tables by launching fill_usmarc.pl

Then, it should work...
What works exactly will come in the next commit, in a few minuts (hitchcock suspens...)