gnucash maint: Better test for conflict between optimization and FORTIFY_SOURCE

[Mike Alexander]

Updated	 via  https://github.com/Gnucash/gnucash/commit/8c21aff5 (commit)
	from  https://github.com/Gnucash/gnucash/commit/ca480862 (commit)



commit 8c21aff5e1dc878f62ef42794524ba17c5601626
Author: Mike Alexander <mta at umich.edu>
Date:   Fri May 2 18:02:08 2014 -0400

    Better test for conflict between optimization and FORTIFY_SOURCE



Summary of changes:
 configure.ac | 25 ++++++++++++-------------
 1 file changed, 12 insertions(+), 13 deletions(-)