no more need to pass down a struct, we now only pass the milliseconds
and let the function do the rest.

The effect of this was that special keystrokes where detected and
passed to the nxagent. E.g. pressing ctrl-alt-f for Fullscreen also
produced an "f" in the current input window inside the nxagent.

Attributes GH PR #822: https://github.com/ArcticaProject/nx-libs/pull/822

With the removal of the Ipaq code there's no path anymore to open the
onscreen keyboard. Also nxkbd is not available and we do not have
tested that feature with any onscreen keyboard yet. So there's no
point in integrating that code.

Fixes ArcticaProject/nx-libs#405

Did we ever provide a binary?

Attributes GH PR #821: https://github.com/ArcticaProject/nx-libs/pull/821

This is a bit weird, I'd expect far more places where the compiler
could complain about Window vs Window64... But it does not.

Screen.c:306:32: warning: passing argument 3 of ‘XQueryTree’ from incompatible pointer type [-Wincompatible-pointer-types]
   if (XQueryTree(d, candidate, &root, &parent, &children, &num_children))
                                ^~~~~
In file included from Screen.c:60:
Agent.h:85:25: note: expected ‘Window64 *’ {aka ‘long unsigned int *’} but argument is of type ‘Window *’ {aka ‘unsigned int *’}
 #define Window          Window64
../../../../exports/include/nx-X11/Xlib.h:3041:5: note: in expansion of macro ‘Window’
     Window*  /* root_return */,

This fixes problems with kwin and compiz when using the
switch-all-screens keystroke. The fullscreen would appear shortly and
then vanish again.

Fixes ArcticaProject/nx-libs#458

Attributes GH PR #820: https://github.com/ArcticaProject/nx-libs/pull/820

Signed-off-by: Mario Trangoni <mjtrangoni@gmail.com>