gnucash maint: Multiple changes pushed

[Christopher Lam]

Updated	 via  https://github.com/Gnucash/gnucash/commit/992f657c (commit)
	 via  https://github.com/Gnucash/gnucash/commit/8f1c82e8 (commit)
	from  https://github.com/Gnucash/gnucash/commit/34bb47e2 (commit)



commit 992f657cc50a679715691735f5bdaec3a9a95740
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Wed Oct 2 21:49:41 2019 +0800

    [test-budget] augment to test budget-income-statement.scm

commit 8f1c82e875d5d8152d0d96a228035fde5e1bb895
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Tue Oct 1 01:21:20 2019 +0800

    [cash-flow] use collector arithmetic



Summary of changes:
 gnucash/report/standard-reports/cash-flow.scm      |  7 +--
 .../report/standard-reports/test/test-budget.scm   | 53 ++++++++++++++++++----
 2 files changed, 45 insertions(+), 15 deletions(-)