gdi32: LineDDA shouldn't include the end point. Add some tests.

[Huw Davies]

---
 dlls/gdi32/painting.c   |    4 +-
 dlls/gdi32/tests/path.c |   82 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 84 insertions(+), 2 deletions(-)
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 19fa669d2b2e71e52aa798f80e900c7f0eba7bba.diff
Type: text/x-patch
Size: 5292 bytes
Desc: not available
Url : http://www.winehq.org/pipermail/wine-patches/attachments/20080415/c1ab6b3f/attachment.bin