r19459 - gnucash/trunk/src/app-utils - Make sx-instance-model more const-correct. Improve documentation.

[Christian Stimming]

Author: cstim
Date: 2010-08-21 16:57:31 -0400 (Sat, 21 Aug 2010)
New Revision: 19459
Trac: http://svn.gnucash.org/trac/changeset/19459

Modified:
   gnucash/trunk/src/app-utils/gnc-sx-instance-model.c
   gnucash/trunk/src/app-utils/gnc-sx-instance-model.h
Log:
Make sx-instance-model more const-correct. Improve documentation.

Fix minor memory leak in gnc_sx_get_current_instances(void) - was not
free'ing the GDate of now.