gnucash master: Fix problem with gcc-4.9 failing to compile gfec.c.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/367b608f (commit)
	from  https://github.com/Gnucash/gnucash/commit/d20dcb46 (commit)



commit 367b608fadee31537634f258527e16c6761ae64f
Author: John Ralls <jralls at ceridwen.us>
Date:   Thu Aug 7 13:12:26 2014 -0700

    Fix problem with gcc-4.9 failing to compile gfec.c.
    
    The error, first reported in email, was that cc1 didn't recognize
    the flag. Solution is to make it a CPPFLAG so that cc1 doesn't see it.



Summary of changes:
 configure.ac                                       |  4 +--
 ...ck_compile_flag.m4 => ax_check_preproc_flag.m4} | 36 +++++++++++-----------
 2 files changed, 20 insertions(+), 20 deletions(-)
 copy macros/{m4_ax_check_compile_flag.m4 => ax_check_preproc_flag.m4} (68%)