Bug 15955: Tuning function 'New child record' for Unimarc 205$a -> 461$e

Now the sYstem tries to insert value of 205$a into 461$a when a child is
created from the father record.  In UNIMARC 46x tags there is not
present a subfield for ediction value (205$a in UNIMARC).

To Test:
1) Check to have EasyAnalyticalRecords on 'off'
2) Check to use UNIMARC
3) Create a record with data in 200$a (title), 205$a (ediction), 700
   (author) 215$a(Place), 215$d(date)
4) From those record create a child using 'New'->'New child record'
5) See the values in 461 tag: You can see that in 461$a there is the
   value of 205$a from father This is wrong, you need to have the value
   of 700 $a and $b from father record, and 205$a in 461$e.
6) Appy the patch
7) Redo 4-5
8) Now 461 is good

Signed-off-by: Frédéric Demians <f.demians@tamil.fr>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
I have not checked the doc but trusting author and signoffer.

Signed-off-by: Brendan A Gallagher <brendan@bywatersolutions.com>

C4/Biblio.pm

@@ -3685,7 +3685,7 @@ sub prepare_host_field {
         if ( $field = $host->field('205') ) {
             my $s = $field->as_string();
             if ($s) {
-                $sfd{a} = $s;
+                $sfd{e} = $s;
             }
         }
         #URL