Fix Can't locate object method "workstation" error

Fix Can't locate object method "workstation" error

When trying to utilize the Recall functionality, Evergreen would fail to update
targeted circulations (truncate the due date, etc.)  In the logs, we would have
an error like this:

[] open-ils.storage [ERR ::action.pm:1597:] Processing of hold failed:
Can't locate object method "workstation" via package "action::circulation" at
/usr/local/share/perl/5.14.2/OpenILS/Application/Storage/CDBI.pm line 181.

We first tried adding the workstation column to Storage/CDBI/action.pm, but a
similar message would then appear instead: Can't locate object method
"checkin_workstation"

This sidesteps the problem entirely.

Thanks to Mike for the solution!

Signed-off-by: Jason Etheridge <jason@EquinoxInitiative.org>