gnucash master: Multiple changes pushed

[Christopher Lam]

Updated	 via  https://github.com/Gnucash/gnucash/commit/624a2d80 (commit)
	 via  https://github.com/Gnucash/gnucash/commit/b9acc987 (commit)
	 via  https://github.com/Gnucash/gnucash/commit/f51f9609 (commit)
	from  https://github.com/Gnucash/gnucash/commit/b835bbd3 (commit)



commit 624a2d809f983b407dfac6083e04a1f4432861c7
Merge: b835bbd38 b9acc9878
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Fri May 1 21:26:20 2020 +0800

    Merge chris 'UK-VAT and AU-GST' branch
    
    https://github.com/Gnucash/gnucash/pull/500

commit b9acc987874d1c37a50477031bcd92ac5dd566e2
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Sat Jul 27 13:40:23 2019 +0800

    [test-income-gst] add uk-vat and au-bas tests

commit f51f9609f3a0809b7b7451b62cb450a3a6432c8e
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Fri Jul 26 23:33:10 2019 +0800

    [income-gst-statement] add UK VAT and AU GST rules
    
    * add australian BAS rules
    * add UK VAT rules
    * rename *ECVAT* and *ECGOODS* to *EUVAT* and *EUGOODS*
    * use (ice-9 match)
    
    NOTE: has a backward-incompatible change to accounts
    selection. Instead of requesting source accounts, ask source sales and
    purchase accounts. Thus capital purchase to asset accounts can be reported.



Summary of changes:
 .../reports/standard/income-gst-statement.scm      | 470 ++++++++++++++-------
 .../reports/standard/test/test-income-gst.scm      | 235 ++++++++---
 2 files changed, 486 insertions(+), 219 deletions(-)