Storing progress dialog styles in the normal window style didn't work because
they clashed with the TLW styles. The original progress dialog implementation
worked around this by using separate m_has{Abort,Skip}Button variables instead
of relying on wxPD_CAN_{ABORT,SKIP} style bits but this didn't work for the
other styles and was unclear so the new native MSW implementation blithely
used m_windowStyle to test or them and other bits which didn't work at all,
see #12416.
Solve this by using a separate m_pdStyle variable for storing the progress
dialog styles and use it for all wxPD_XXX tests in both the generic and MSW
code. This fixes some bugs (although not all of them yet) and allows to get
rid of m_has{Abort,Skip}Button.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65501 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
e77570de2e