[Lazarus] WinCE regress show form.

[haword at mail.ru]

> Please update to svn 25401 and compile with -dVerboseShowing (in the
> configure build lazarus dialog, advanced, Options).

Unfortunately I don't get any more debug with this option.
I changed the order (first hide the current grid then show other) and
it doesn't hide first, so the problem is not only with showing grid.
But I think I found workaround for this problem

before:
SG1.Visible:=true;
SG2.Visible:=false;

after:
SG2.Visible:=false;
Application.ProcessMessage;
SG1.Visible:=true;

I do not know how good is this solution. I'm going testing.