gnucash maint: Bug 796893 - invoice.GetDatePosted() and other date related...

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/820cd842 (commit)
	from  https://github.com/Gnucash/gnucash/commit/7a4b06c4 (commit)



commit 820cd842f19c4ed1b93777f8ec21fa76ff2c3ac1
Author: Tom Lofts <dev at loftx.co.uk>
Date:   Sat Oct 6 14:59:52 2018 -0700

    Bug 796893 - invoice.GetDatePosted() and other date related...
    
    functions returns strange values for uninitalised dates.
    
    Convert time64 equal to INT64_MAX to Python's None value.



Summary of changes:
 bindings/python/time64.i | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)