kohabug 2076: more reconciliation of DB schema (DB rev 080)

kohabug 2076: more reconciliation of DB schema (DB rev 080)

Adjustments to updatedatabase.pl to help ensure that a
DB upgraded from 2.2.9, 3.0-alpha, or 3.0-beta has a schema
identical to a fresh installation.

The changes to the following columns and indexes are to
default values, field widths, position relative to other
columns or index names.

virtualshelfcontents.biblionumber
virtualshelfcontents_ibfk_1 (virtualshelfcontents)
shelfcontents_ibfk_2 (virtualshelfcontents)
sessions.id
deletedbiblioitems.marc
branchcategories.categorycode
branchrelations.categorycode
items.damaged
deleteditems.notforloan
deleteditems.damaged
deleteditems.itemlost
deleteditems.wthdrawn
currency.symbol
subscription.numberlength
subscription.weeklength
serialidx (serialitems)
items.more_subfields_xml
z3950servers.type
deleteditems.more_subfields_xml
opac_news.lang
labels_conf.formatstring

The following missing columns were added:

deletedbiblioitems.marcxml
deleteditems.itype

The 080 DB rev is specifically for syncing the schema
for users of 3.0-alpha, 3.0-beta, and 3.0-beta2, and should
be a no-op for anybody who has followed git HEAD for
the past few months:

subscription.monthlength
deleteditems.marc
aqbooksellers.name

NOTE: this patch does not handle the case of syncing
the DB of a developer or user who has been following
git HEAD since before 3.0-alpha.

Signed-off-by: Joshua Ferraro <jmf@liblime.com>