Moved some utils from utils/ to ucw/

Moved some utils from utils/ to ucw/

Some of the utilities do not need sherlock (and are not anyhow related
to it), so they were moved to libucw:

    * b224 (base224 encoder/decoder)
    * daemon-helper (replacement for start-stop-daemon)
    * hex (hex dumper)
    * rotate-log (log rotator)
    * urltool (url manipulating tool)

Introduced a CONFIG_UCW_UTILS config switch which controls compilation
of these utilities.

Originally by Michal, with minor changes by MJ:

    * basecode.test is added to TESTS only if CONFIG_UCW_UTILS is set.
    * Changed the order of Makefile sections and Set statements to
      a more logical one.