Style objects are referenced counted in richedit controls, so I tried to
make sure styles were released properly.  This can be checked using with
the all_refs global reference count to see if everything is cleaned up.

Previously inserting the object didn't result in the text being wrapped,
which would cause an assertion error when this is checked for during
repainting the text.  It is also important to invalidate the affected
areas of text, update the scrollbar, and end the creation of undo
transactions for this insertion.

Reported by Paul Vriens.

comdlg32: In the file dialog change the position of the file browser when the application changes that of the invisible listbox control.