Minor code simplification from Chris Shoemaker.

[David Hampton]

Log Message:
-----------
Minor code simplification from Chris Shoemaker.  Some line wrap fixes
and comments.

Tags:
----
gnucash-gnome2-dev

Modified Files:
--------------
    gnucash/src/backend/file:
        gnc-account-xml-v2.c
    gnucash/src/engine:
        qofbook.c
    gnucash/src/report/report-gnome:
        gnc-plugin-page-report.c