Add HTML documentation from the website.

Compatibility fixes for Qt 4.3

Add Boost's program_options

Add a missing icon file.

Change the search buttons to "toolbar buttons".

Add an icon to stop an ongoing search.

Fix race conditions when interrupting a loading by another loading.

The operations in LogData are now queued and only started when the previous one
has been reported done by the worker thread.

Add a stop button in the loading progress bar.

Fix file size and number of lines for very big files.

Now uses qint64 for both file size and line number (but not for match index so
far).

Fix the black background of the status line on KDE.

InfoLine now has a custom painter to draw its background.

Tests if the file is readable instead of just 'exists'.

Tests if the file exists before opening it.
This is because LogData now happily accepts a non existent file.
The unit test is also fixed accordingly.

Improved log format to include the source filename.

Status line now reports the size in human readable format and the last modified date.

Implements a new FileWatcher in order to watch even a non-existent/deleted file
(via its directory).

A nonexistent file is now treated as an empty file.

Add a "random page" performance test.

Now close the file when it's not read.
And new AbstractLogData::getLines() function to speed up getting multiple lines.

Add one line copy to clipboard (and global mouse selection).

Disabled auto-completion on the search line.

Add notification and clear the search when the file is truncated.

Better default font (mono/courier) and correct the font width bug.

Correct a bad use of updateData following async update.

Hack around the race condition interruptSearch/clearSearch when entering a blank search.
Minor unit test correction.

Make LogData (at least mostly) thread-safe.
Also fix a bug in the line numbering (it started at line 1) and re-add the full sequential read test.