gnucash master: Change the Glib version test for C-standard to a compile check.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/06d5d0a2 (commit)
	from  https://github.com/Gnucash/gnucash/commit/9343ebe9 (commit)



commit 06d5d0a20aaad7ead1aa182cfa644d12ceda5f5c
Author: John Ralls <jralls at ceridwen.us>
Date:   Thu Jun 18 14:19:12 2015 -0700

    Change the Glib version test for C-standard to a compile check.
    
    The actual problem occurred in only a couple of Glib releases before
    being reverted.



Summary of changes:
 configure.ac | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)