user32: Add a test for BM_SETSTYLE, make it pass under Wine.

[Paul Vriens]

Dmitry Timoshkov wrote:
> ---
>  dlls/user32/button.c    |   14 ++++++-
>  dlls/user32/tests/msg.c |   86 ++++++++++++++++++++++++++++++++++++++--------
>  2 files changed, 83 insertions(+), 17 deletions(-)
> 

Hi Dmitry,

These new tests introduce some failure on Win98/WinMe.

Could you have a look?

-- 
Cheers,

Paul.