Xpra

* fix clipboard on OSX
* fix remote ssh start with start-child issues
* use secure "compare_digest" if available
* fix crashes in codec cleanup
* fix video encoding fallback code
* fix fakeXinerama setup wrongly skipped in some cases
* fix connection failures with large screens and uncompressed RGB
* fix Ubuntu trustyi Xvfb configuration
* fix clipboard errors with no data
* fix opencl platform initialization errors

* fix server early exit when pulseaudio terminates
* fix SELinux static codec library label (make it persistent)
* fix missed auto-refresh when batching
* fix disabled clipboard packets coming through
* fix cleaner client connection shutdown sequence and exit code
* fix resource leak on connection error
* fix potential bug in fallback encoding selection
* fix deadlock on worker race it was meant to prevent
* fix remote ssh server start timeout
* fix avahi double free on exit
* fix png and jpeg painting via gdk pixbuf (when PIL is missing)
* fix webp refresh loops
* honour lz4-off environment variable
* fix proxy handling of raw RGB data for large screen sizes
* fix potential error from missing data in client packets

* fix x11 server pixmap memory leak
* fix speed and quality values range (1 to 100)
* fix nvenc device allocation errors
* fix unnecessary refreshes with nvenc
* fix "initenv" compatibility with older servers
* don't start child when upgrading or shadowing

* fix compatibility older versions of pygtk (centos5)
* fix compatibility with python 2.4 (centos5)
* fix AltGr workaround with win32 clients
* fix some missing keys with `fr` keyboard layout (win32)
* fix installation on systems without python-glib (centos5)
* fix Xorg version detection for Fedora rawhide

* fix use correct dimensions when evaluating video
* fix invalid latency statistics recording
* fix auto-refresh wrongly cancelled
* fix connection via nested ssh commands
* fix statically linked builds of swscale codec
* fix system tray icons when upgrading server
* fix opengl compatibility with older libraries
* fix ssh connection with shells not starting in home directory
* fix keyboard layout change forwarding

* fix numeric keypad period key mapping on some non-us keyboards
* fix client launcher GUI on OSX
* fix remote ssh start with clean user account
* fix remote shadow start with automatic display selection
* fix avoid scaling during resize
* fix changes of speed and quality via xpra control (make it stick)
* fix xpra info global batch statistics
* fix focus issue with some applications
* fix batch delay use