Changes in version 1.11:

In case of error writing the logfile to disc, the user is now given the
possibility of fixing the problem and continue.

The splitting algorithm has been modified to read secuentially the areas
smaller than a threshold size.

After every read error, ddrescue now verifies the input file has not
disappeared.

In rescue mode, ddrescue now shows the time elapsed from the last
successful read.

Signals SIGUSR1 and SIGUSR2 are now ignored by ddrescue.

Descriptions of "--direct", "--synchronous" and "--sparse" in the manual
have been made clearer.

Description of rescue algorithm in the manual has been made clearer.

"make check" now verifies that files are open in binary mode.

A warning about logfile usage has been added to "ddrescue --help" output.
