gnucash maint: Add new price source - 'nearest before report date'

[Christopher Lam]

Updated	 via  https://github.com/Gnucash/gnucash/commit/2ba93071 (commit)
	from  https://github.com/Gnucash/gnucash/commit/5957b3c2 (commit)



commit 2ba930713a852b1584a1359504e45422fd59f543
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Fri Apr 23 21:46:03 2021 +0800

    Add new price source - 'nearest before report date'
    
    Add new price source - 'nearest before report date' will ignore
    prices *after* report date. Will be useful to fix bug 743753.



Summary of changes:
 gnucash/report/commodity-utilities.scm | 16 ++++++++++++++++
 gnucash/report/options-utilities.scm   |  1 +
 2 files changed, 17 insertions(+)