Xpra

* fix xpra_launcher
* fix DPI issue with Xdummy: set virtual screen to 96dpi by default
* avoid looping forever doing maths on 'infinity' value
* fix incomplete cloning of attributes causing default values to be used for batch configuration
* damage data queue batch factor was being calculated but not used
* ensure we update the data we use for calculations (was always using zero value)
* ensure "send_bell" is initialized before use
* add missing path string in warning message
* fix test code compatibility with older xpra versions
* statistics shown for 'damage_packet_queue_pixels' were incorrect

* new packet encoder written in C (much faster and data is now smaller too)
* read provided /etc/xpra/xpra.conf and user's own ~/.xpra/xpra.conf
* support Xdummy out of the box on platforms with recent enough versions of Xorg (and not installed suid)
* pass dpi to server and allow clients to specify dpi on the command line
* fix xsettings endianness problems
* fix clipboard tokens sent twice on start
* new command line options and UI to disable notifications forwarding, cursors and bell
* MS Windows clients can now choose the remote clipboard they sync with ('clipboard', 'primary' or 'secondary')
* x264: adapt colourspace conversion, encoding speed and picture quality according to link and encoding/decoding performance
* automatically change video encoding: handle small region updates (ie: blinking cursor or spinner) without doing a full video frame refresh
* fairer window batching calculations, better performance over low latency links and bandwidth constrained links
* lower tcp socket connection timeout (10 seconds)
* better compression of cursor data
* log date and time with messages, better log messages (ie: "Ignoring ClientMessage..")
* send more client and server version information (python, gtk, etc)
* build cleanups: let distutils clean take care of removing all generated .c files
* code cleanups: move all win32 specific headers to win32 tree, fix vpx compilation warnings, whitespace, etc
* more reliable MS Windows build: detect missing/wrong DLLs and abort
* removed old "--no-randr" option
* drop compatibility with versions older than 0.3: we now assume the "raw_packets" feature is supported

* fix clipboard atom packing (was more noticeable with qt and Java applications)
* fix clipboard selection for non X11 clients: only 'multiple' codepath requires X11 bindings
* fix python3 build
* fix potential double free in x264 error path
* fix logging format error on "window dimensions have changed.." (parameter grouping was wrong)
* fix colour bleeding with x264 (ie: green on black text)
* remove incorrect and unnecessary callback to `setup_xprops` which may have caused the pulseaudio flag to use the wrong value
* delay 'check packet size' to allow the limit to be raised - important over slower links where it triggers more easily

* fix clipboard bugs
* fix batch delay calculations with multiple windows
* fix tests (update import statements)
* robustify cython version string parsing
* fix source files changed detection during build

* fix client application resizing its own window
* fix window dimensions hints not applied
* fix memleak in x264 cleanup code
* fix xpra command exit code (more complete fix)
* fix latency bottleneck in processing of damage requests
* fix free uninitialized pointers in video decoder initialization error codepath
* fix x264 related crash when resizing windows to one pixel width or height
* fix accounting of client decode time: ignore figure in case of decoding error
* fix subversion build information detection on MS Windows
* fix some binary packages which were missing some menu icons
* restore keyboard compatibility code for MS Windows and OSX clients
* use padded buffers to prevent colourspace conversion from reading random memory
* release Python's GIL during vpx and x264 compression and colourspace conversion
* better UI launcher: UI improvements, detect encodings, fix standalone/win32 usage, minimize window once the client has started
* "xpra stop" disconnects all potential clients cleanly before exiting
* x264 uses memory aligned buffer for better performance
* avoid vpx/x264 overhead for very small damage regions
* detect dead connection with ping packets: disconnect if echo not received
* force a full refresh when the encoding is changed
* more dynamic framerate performance adjustments, based on more metrics
* new menu option to toggle keyboard sync at runtime
* vpx/x264 runtime imports: detect broken installations and warn, but ignore when the codec is simply not installed
* enable environment debugging for damage batching via "XPRA_DEBUG_LATENCY" en [] variable
* simplify build by using setup file to generate all constants
* text clients now ignore packets they are not meant to handle
* removed compression menu since the default is good enough
* "xpra info" reports all build version information
* report server pygtk/gtk versions and show them on session info dialog and "xpra info"
* ignore dependency issues during sdist/clean phase of build
* record more statistics (mostly latency) in test reports
* documentation and logging added to code, moved test code out of main packages
* better MS Windows installer graphics
* include distribution name in RPM version/filename
* CentOS 6 RPMs now depends on libvpx rather than a statically linked library
* CentOS static ffmpeg build with memalign for better performance
* debian: build with hardening features
* debian: don't record as modified the files we know we modify during debian build
* MS Windows build: allow user to set --without-vpx / --without-x264 in the batch file
* MS Windows build fix: simpler/cleaner build for vpx/x264's codec.pyd
* no longer bundle parti window manager

* do not try to free the empty x264/vpx buffers after a decompression failure
* fix xpra command exit code (zero) when no error occurred
* fix Xvfb deadlock on shutdown
* fix wrongly removing unix domain socket on startup failure
* fix wrongly killing Xvfb on startup failure
* fix race in network code and metadata packets
* ensure clients use raw_packets if the server supports it (fixes 'gibberish' compressed packet errors)
* fix screen resolution reported by the server
* fix maximum packet size check wrongly dropping valid connections
* honour the --no-tray command line argument
* detect Xvfb startup failures and avoid taking over other displays
* don't record invalid placeholder value for "server latency"
* fix missing "damage-sequence" packet for sequence zero
* fix window focus with some Tk based application (ie: git gui)
* prevent large clipboard packets from causing the connection to drop
* fix for connection with older clients and server without raw packet support and rgb24 encoding
* high latency fix: reduce batch delay when screen updates slow down
* non-US keyboard layout fix
* correctly calculate min_batch_delay shown in statistics via "xpra info"
* require x264-libs for x264 support on Fedora