gnucash unstable: Multiple changes pushed

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/f910d931 (commit)
	 via  https://github.com/Gnucash/gnucash/commit/b99dee17 (commit)
	from  https://github.com/Gnucash/gnucash/commit/4601cfcb (commit)



commit f910d931f74b2628ee9192cb3e23494a9b1e52f9
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Sat Mar 31 05:32:37 2018 +0800

    gncInvoice: complete removal gncInvoiceDateExists

commit b99dee17361be2ca02d107b141d823c9322c668c
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Sat Mar 31 05:26:36 2018 +0800

    Replace gncInvoiceDateExists to gncInvoiceIsPosted
    
    This commit partially reverts commit 862956a7609 which exported
    gncInvoiceDateExists. Remove this API and use gncInvoiceIsPosted
    instead.



Summary of changes:
 gnucash/report/business-reports/job-report.scm        | 12 ++++++------
 gnucash/report/business-reports/owner-report.scm      |  6 +++---
 gnucash/report/business-reports/taxinvoice.eguile.scm |  3 ++-
 libgnucash/engine/gncInvoice.c                        |  8 --------
 libgnucash/engine/gncInvoice.h                        |  1 -
 5 files changed, 11 insertions(+), 19 deletions(-)