TODO

immediate:
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MinGW32 doesn't do fcntl on sockets; use setsockopt instead...
always undraw cursor after sending updates, but do not mark region as modified.
add automatic tests (plasma?)
if preferredEncoding is set outside of libvncserver, don't override it.
make libvncclient threadsafe (static zlib buffer -> rfbClient*)
make corre work again (libvncclient or libvncserver?)
implement zrle in libvncclient
implement "-record" in libvncclient

later:
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selectbox: scroll bars
authentification schemes (secure vnc)
	IO function ptr exists; now explain how to tunnel and implement a
	client address restriction scheme.
using Hermes library for fast colour translations.
CORBA