Another compilation fix for wxUniv/MSW build.

This should have been part of r76077, see #16039.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76084 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Add wxFD_NO_FOLLOW style for wxFileDialog.

This style tells the dialog to return the paths of the link being selected
without dereferencing it.

Currently only implemented under wxMSW as the links are not dereferenced by
default in wxGTK anyhow. But we may want to change this and implement it there
too for consistency in the future.

Closes #15429.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76085 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775