Please describe the problem:
the advanced portfolio report is still broken in a few ways as described on
-devel. There have been a number of patches applied lately that make it better
and here is another one. This patch tidies up the multi-currency handling quite
a bit. Also adds some functionality such as showing the basis, realized and
unrealized gains and also takes advantage of the
gnc_pricedb_lookup-latest-before added over here
http://bugzilla.gnome.org/show_bug.cgi?id=334335. 

Also the following advanced portfolio bugs are probably fixed by this as well:
http://bugzilla.gnome.org/show_bug.cgi?id=105466
http://bugzilla.gnome.org/show_bug.cgi?id=167722


and finally, this is a continued resolution to
http://bugzilla.gnome.org/show_bug.cgi?id=314554

patch attached.


Steps to reproduce:
Use the advanced portfolio report in a multi-currency situation.


Actual results:


Expected results:


Does this happen every time?


Other information: