The attached patch contains some immediate bug fixes for the SQL
back end, and it adds and error message string + accessor/mutator
to Backend. Also, in xaccAccountCommitEdit(), added the use of
PWARN_GUI to display the error message.
The bug fixes in the SQL backend involved converting the *_QUERY
macros to functions.
git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@7485 57a11ea4-9604-0410-9ed3-97b8803252fd