Bug 8307: Set a value for subfields when receiving

Bug 8307: Set a value for subfields when receiving

If items are created when ordering, this patch allows to add a value for
some items subfields.

Test plan:
Define status for items.notforloan (mapping 995$o in unimarc), for
example 4:On order, 5:On treatment

Set the Syspref AcqCreateItem on "ordering".

ACQ framework : set default value = 4 for 995$o (in unimarc)

Syspref AcqItemSetSubfieldsWhenReceived : set "o=5|b='foo bar'"

When ordering the item, default status will be 4 ; when receiving the
item, status will be changed from 4 to 5. The subfield b have to contain
'foo bar'

Signed-off-by: Frederic Durand <frederic.durand@unilim.fr>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>