Update minimal required GTK+ version to 2.6 in another place.

It really should only appear in a single place only, ideally, but currently we
have it in several different documents inside and outside the manual.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@75164 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Use Cocoa by default for --with-osx and --with-mac configure options.

Even though Cocoa is now officially the default port, these options still
selected Carbon.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@75165 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Add a comment explaining the need for a temporary NULL variable.

Explain the changes of r75162 as they risk not being preserved otherwise.

Also make this variable static and const because it's really a constant.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@75166 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix wxFileName compilation in Cygwin builds.

Do define StatAny() helper calling either stat() or lstat() under Cygwin, it
is available and should be used there even if __WIN32__ is defined.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@75167 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
fully initialize GTypeInfo structure

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@75168 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
use gtk_combo_box_get_wrap_width(), we require GTK+ 2.6 now

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@75169 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775