[Bug 45273] Chessbase 11 cannot draw arrows

https://bugs.winehq.org/show_bug.cgi?id=45273

--- Comment #2 from David  ---
So I tried a nieve fix by adding the fields above, implementing
GdipSetCustomLineCapStrokeCaps and getting the values from the customcaps in
the set start and end caps in the pen routines. This got rid of the fixme in
GdipWidenPath, however all that happened is the arrow stem had rounded edges.
So either my fix was incorrect, or there is additional work to get chessbase to
display arrows (such as fixes to the arrow routine).