added more testing for specimens in new_request - still have issue with null entry in request_specimen table; new request validation forces specimen code to uppercase; gallium trial script tweaks; t/test-lib.pl switches off foreign_key_checks before re-building tables}
git-svn-id: https://jti.org.uk/svn/hmds_lims/trunk@1612 4177bd82-f056-0410-812d-caef170e3fa0
