gnucash maint: [trep-engine] add transaction filter exclude option

[Christopher Lam]

Updated	 via  https://github.com/Gnucash/gnucash/commit/58258b94 (commit)
	from  https://github.com/Gnucash/gnucash/commit/509c542a (commit)



commit 58258b94002226ca635a327b945ab340fb7d4acc
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Thu Nov 14 09:20:16 2019 +0800

    [trep-engine] add transaction filter exclude option
    
    add boolean option which converts the transaction filter from
    'include' to 'exclude'.



Summary of changes:
 gnucash/report/report-system/trep-engine.scm       | 22 +++++++++++++++++++---
 .../standard-reports/test/test-transaction.scm     |  6 ++++++
 2 files changed, 25 insertions(+), 3 deletions(-)