r21706 - gnucash/trunk/src - Implement setting the date for duplicating multiple invoices.

[Christian Stimming]

Author: cstim
Date: 2011-12-10 16:10:17 -0500 (Sat, 10 Dec 2011)
New Revision: 21706
Trac: http://svn.gnucash.org/trac/changeset/21706

Modified:
   gnucash/trunk/src/business/business-gnome/dialog-invoice.c
   gnucash/trunk/src/business/business-gnome/dialog-invoice.h
   gnucash/trunk/src/gnome-utils/dialog-dup-trans.c
   gnucash/trunk/src/gnome-utils/dialog-dup-trans.h
Log:
Implement setting the date for duplicating multiple invoices.

Along the way, the "dialog date" dialog accepts a GDate argument instead of
a time_t because the user enters a date, not a date-and-time.