Restructure of the 'nodrop' feature, global apply.
Restructure of the 'nodrop' feature, global apply.

A function field could have the 'nodrop' attribute, which means that
a corresponding table column wouldn't be dropped. Improve the message
for that.
Also, introduce a global debug->drop_guard setting in the conf, that
will prevent *any* column from being dropped. This will hopefully
protect the data accross development builds.

xrg/openerp-server,xrg/openerp-server