richedit: Set bEmulateVersion10 initially to avoid retroactive changes.

richedit: Set bEmulateVersion10 initially to avoid retroactive  changes.

Previously the WM_NCCREATE was handled by the as if it was always for
later versions, then the window proc for version 1.0 would make
appropriate changes afterwards.  Instead both versions should call the
same function (e.g. ME_MakeEditor) and provide the value for
bEmulateVersion10 to make the code clearer.