gnucash master: Multiple changes pushed

[Mike Alexander]

Updated	 via  https://github.com/Gnucash/gnucash/commit/310be62e (commit)
	 via  https://github.com/Gnucash/gnucash/commit/7fcf6a13 (commit)
	from  https://github.com/Gnucash/gnucash/commit/fdc9a6a1 (commit)



commit 310be62ed3298adbc327bdc2e10951ab19cc0f08
Author: Mike Alexander <mta at umich.edu>
Date:   Fri Nov 6 23:13:41 2015 -0500

    Add some better comments.

commit 7fcf6a1301ab0b149a1427ed3d616a715bdb1029
Author: Mike Alexander <mta at umich.edu>
Date:   Fri Nov 6 22:43:00 2015 -0500

    Make sure commodity-tz-quote-triple->price always returns a value.
    
    Because of misplaced parens it was not returning a value if no price
    for the same day was in the price DB.



Summary of changes:
 src/engine/gnc-pricedb.c | 17 +++++++++++++++--
 src/scm/price-quotes.scm | 30 +++++++++++++++---------------
 2 files changed, 30 insertions(+), 17 deletions(-)