Speedup overlong text detection

Detecting very long window titles is done via FbTk::TextUtils::doAlignment().
Instead of removing one char from the title at a time to see if it fits into a
given 'max_width', we now use a binary-search like approach to get faster to
the right value. This massively improves the speed for windows with
(arbitrary) long window titles (see bug #1090, javascript

    document.title = new Array(4999).join(".");

leads to massive waiting for fluxbox to detect that this window has a very
long title).

In addition to that Xft returns 'wrapped' shorts ('integer overflows') for
long texts: XGlpyhInfo.xOff is declared as signed short, it's able to hold
~32k pixels. A monospace font with font-size 10 produces an integer
overflow after 3276 chars / glyphs, thus rendering the check

    if (text_width < max_width) { /* ... */ }

pointless and leading rendering the whole title. By calculating some kind of
upper limit for a pseudo-wide glyph ("WW") and strictly cutting off the input
string at that limit prevents this issue.
Returning EXIT_FAILURE on exit in fluxbox-remote.
cosmetics
fix detection of $HOME folder

usually $HOME is set when fluxbox runs. in some rare scenarios (eg., fuzzying
binaries to detect bugs) one could launch fluxbox by using 'env -i' and thus
eliminating $HOME from the environment. to prevent crashes fluxbox uses now
'getpwuid()' when $HOME is not set to detect the home folder.
Constify the type passed to std::equal_to.

std::bind2nd() has problems with the existing call because it uses the
argument type passed to std::equal_to() in std::binder2nd()'s constructor,
but WinClient* does not have the const specifier that `client' does.

The call works fine with libstdc++ because of the way it implements
std::bind2nd(), but fails with libc++ and possibly with other STL
implementations as well.
Updated Japanese Translation
update hebrew translation
Fix lost keypresses after workspace change (#1067)

Do not Ungrab the keyboard for a KeyPress event, this causes us to lose the
KeyRelease event which is needed to ungrab the keyboard after the event
happened.
Add support for stacked tiling via ArrangeWindows*
Fix ArrangeWindowsStack* for multi-head displays

* Fix integer wrap around for some situations (resulting in a very wide
  window):

      w = max_width - x_offs - (*closest)->widthOffset()

  If the given window is on the right most display and thus 'x_offs' is
  bigger than 'max_width' (half of the display width), the resulting 'w' wraps
  around and becomes very large.

* Place a single window via ArrangeWindowsStack* as well
* Some minor code styling / reordering along the way