No changes, just attempts to make the code more readable.

No changes, just attempts to make the code more readable.

Reformat/reindent, use more wx coding style, wrap some extremely long lines.
Use shorter and less Carbon-ish variable names. Clarify some comments.

Also use static_cast<> because there is no need to use reinterpret_cast<> when
a static_cast<> will do.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@62435 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775