TD-57

- TD-57 taskdctl script assumes /bin/sh is /bin/bash (thanks to Tatjana
  Heuser).
- Other scripts updated also - now everything requires bash.
TD-56

- TD-56 File.cpp needs to include <string.h> on Solaris (thanks to Tatjana
        Heuser).
TD-55

- TD-55 TLSServer/Client need to include <errno.h> on Solaris (thanks to
        Tatjana Heuser).
Performance

- Improved I/O performance with better defaults for buffer sizes.