r20154 - gnucash/trunk/src/backend/sql - Throw an error and return if if the book is marked readonly.

[John Ralls]

Author: jralls
Date: 2011-01-23 12:35:31 -0500 (Sun, 23 Jan 2011)
New Revision: 20154
Trac: http://svn.gnucash.org/trac/changeset/20154

Modified:
   gnucash/trunk/src/backend/sql/gnc-backend-sql.c
Log:
Throw an error and return if if the book is marked readonly.