Update for the new function names.

[David Hampton]

Log Message:
-----------
Update for the new function names.

Tags:
----
gnucash-gnome2-dev

Modified Files:
--------------
    gnucash/src/gnome:
        gnc-plugin-page-account-tree.c
        gnc-plugin-page-register.c
    gnucash/src/import-export/hbci:
        gnc-plugin-hbci.c
    gnucash/src/report/report-gnome:
        gnc-plugin-page-report.c
    gnucash/src/report/stylesheets:
        gnc-plugin-stylesheets.c