if length of the member name was divisible by block size (512).
Consequently, the file pointer was set off and the next member
was not processed correctly.
+** Previous version created invalid archives when files shrink
+during reading.
+** Compare mode (tar d) hanged when trying to compare file contents.
\f
version 1.15.1 - Sergey Poznyakoff, 2004-12-21