gnucash maint: Release 2.6.4

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/79bdcf19 (commit)
	from  https://github.com/Gnucash/gnucash/commit/c61366b8 (commit)



commit 79bdcf199670893e86ce5ee334a43a58376a334a
Author: John Ralls <jralls at ceridwen.us>
Date:   Sat Sep 27 17:54:22 2014 -0700

    Release 2.6.4



Summary of changes:
 ChangeLog    | 794 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 NEWS         | 198 ++++++++++++---
 configure.ac |   2 +-
 3 files changed, 952 insertions(+), 42 deletions(-)