Bug 9761: dbrev for ConfirmFutureHolds

Db rev for new pref ConfirmFutureHolds.

Test plan:
Run [your server]/cgi-bin/koha/installer/install.pl?step=3&op=updatestructure
Optionally, run a new install to test sysprefs.sql.
Or:
Edit sysprefs.sql, leave at least the last few lines including the new one.

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>

installer/data/mysql/sysprefs.sql

@@ -76,6 +76,7 @@ INSERT INTO systempreferences ( `variable`, `value`, `options`, `explanation`, `
 ('CircAutocompl','1',NULL,'If ON, autocompletion is enabled for the Circulation input','YesNo'),
 ('CircAutoPrintQuickSlip','1',NULL,'Choose what should happen when an empty barcode field is submitted in circulation: Display a print quick slip window or Clear the screen.','YesNo'),
 ('CircControl','ItemHomeLibrary','PickupLibrary|PatronLibrary|ItemHomeLibrary','Specify the agency that controls the circulation and fines policy','Choice'),
+('ConfirmFutureHolds','0','','Number of days for confirming future holds','Integer'),
 ('COinSinOPACResults','1','','If ON, use COinS in OPAC search results page.  NOTE: this can slow down search response time significantly','YesNo'),
 ('CurrencyFormat','US','US|FR','Determines the display format of currencies. eg: \'36000\' is displayed as \'360 000,00\'  in \'FR\' or \'360,000.00\'  in \'US\'.','Choice'),
 ('dateformat','us','metric|us|iso','Define global date format (us mm/dd/yyyy, metric dd/mm/yyy, ISO yyyy-mm-dd)','Choice'),

installer/data/mysql/updatedatabase.pl

@@ -7139,6 +7139,14 @@ if ( CheckVersion($DBversion) ) {
     SetVersion ($DBversion);
 }
 
+$DBversion ="3.13.00.XXX";
+if ( CheckVersion($DBversion) ) {
+    $dbh->do("INSERT IGNORE INTO systempreferences (variable,value,explanation,options,type) VALUES('ConfirmFutureHolds','0','Number of days for confirming future holds','','Integer');");
+    print "Upgrade to $DBversion done (Bug 9761: Add ConfirmFutureHolds pref)\n";
+    SetVersion($DBversion);
+}
+
+
 =head1 FUNCTIONS
 
 =head2 TableExists($table)