This change adds some [self own_clipboard] calls in the necessary places to get the proper greedy behavior.
UTF8_STRING and STRING properties seem to work well now with the test cases (PRIMARY, and CLIPBOARD). I can copy from several different X apps, and have the behavior be correct when pasting. I also verified that quartz-wm isn't doing the copying, by disabling the quartz-wm paths.
(cherry picked from commit 934669f732)
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.
(cherry picked from commit 40190675a6)
Convert the puts usage to use DB().
Add the initial handle_image method.
Check for nil in the NSString instantiation in various places.
Add some commentary to enhance the clarity of why I did some things.
(cherry picked from commit 37361567b6)
