Fix wxVector3f ctor in the propgrid sample.

Even if this code is not used, it was still wrong as it didn't initialize the
(shadowed) member variables, so fix it to actually do it.

Closes #16342.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76747 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Force wxUSE_GRAPHICS_CONTEXT to 0 for wxMotif build.

wxGraphicsContext is not implemented in this port.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76748 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Handle wxSYS_COLOUR_LISTBOXTEXT in wxMotif wxSystemSettings.

At the very least, don't fail with an assert if this colour is requested.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76749 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Change wxStringSort{As,De}cending() to use references, not pointers.

This is more convenient to use and makes more sense as the arguments are never
null.

See #16330.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76750 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Allow specifying custom comparator for wxSortedArrayString.

Add a possibility to order wxSortedArrayString in some order different from
the default alphabetical one.

Closes #16330.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76751 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Avoid harmless warning about unused variables in wxOSX/Carbon.

Declare the variables only used when wxUSE_STATUSBAR==1 inside the check for
it.

Closes #16331.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76752 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775