gnucash master: Ensure that PRIi64 is defined in mingw.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/dbf4eada (commit)
	from  https://github.com/Gnucash/gnucash/commit/dc4fce0a (commit)



commit dbf4eada944de2dd4c9dfedb95fec58082da5b40
Author: John Ralls <jralls at ceridwen.us>
Date:   Tue Apr 5 15:49:02 2016 -0700

    Ensure that PRIi64 is defined in mingw.



Summary of changes:
 src/libqof/qof/qofbook.cpp | 4 ++++
 1 file changed, 4 insertions(+)