gnucash master: Allow building for mac integration with gcc-4.8

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/6e62ce99 (commit)
	from  https://github.com/Gnucash/gnucash/commit/de1de4f0 (commit)



commit 6e62ce9938a7488cf259e1b7b28d440f6c68ae80
Author: John Ralls <jralls at ceridwen.us>
Date:   Sun May 18 17:40:35 2014 -0700

    Allow building for mac integration with gcc-4.8



Summary of changes:
 configure.ac | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)