Don't crash in wxOSX wxDataViewChoiceRenderer if selection was cancelled.

Check for the index validity and ignore the value of -1 as it is passed if the
selection in the popup was cancelled.

Closes #16017.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76051 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Really fix using install_name_tool with wxrc under OS X.

Don't test for USE_XRC before it is set, correcting the wrong change of
r75845.

See #15946.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76052 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Remove redundant comparison of unsigned value with 0.

This is always true and so is unnecessary.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76053 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix harmless signed/unsigned comparison warning in wxOSX wxJoystick.

A better fix would probably be to make wxJoystick::GetNumberAxes() return an
unsigned value.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76054 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Implement support for wxGA_VERTICAL style in wxOSX.

Rotate the native control to make it look correct in vertical orientation.

Closes #15682.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76055 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix off by 1 error in buffer size in wxOSX wxDropTarget code.

The size of the buffer used for the data currently needs to include an extra
byte for the trailing NUL. This is wrong, as it means that GetDataSize() and
GetDataHere() behaviour is not consistent, but at least avoid overrunning the
buffer for now.

Also use wxCharBuffer instead of raw char array to make the code safer (both
because it releases the memory automatically and because it also adds an extra
byte for the trailing NUL automatically as well, making such bugs impossible).

See #15914.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76056 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775