INCR transfers mixed with a CLIPBOARD change.
Fix a bug with some UTF-8 transfers. I can only guess that my UTF-8
tests before were inadequate. I can now copy/paste any characters between
uxterm and Textedit.app.
We can now copy and paste images to and from X11. Text copying and
pasting works as well.
The NSPasteboard can contain TIFF or PICT images, and pbproxy will
translate to an image/png or image/jpeg request, and list those in the
TARGETS.
I added a description of the basic design at the top of x-selection.m.
I removed the request_data x_selection class struct. It's not needed.
Add TRACE() calls where appropriate to try to figure out why we are losing CLIPBOARD at times, after transferring PRIMARY to the NSPasteboard.
Use the new pbproxy_clipboard_to_pasteboard where appropriate.
