units: remove --name from help message

--name was converted to --units.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
units: don't use undefined variable UNITS_DIR

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
units: remove unnecessary backslash at the end of line

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
units: fix wrong variable reference

${guessed_lang} is referred in run_shrink.
This should be ${lang}.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
units: add --quiet option to shrink action

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
units: clean up whitespaces

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
units: move the implementation of fuzz from testing.mak to misc/units script

In addition to old implementation, new one can use SHRINK like:

	$ make -f testing.mak fuzz VG=1 SHRINK=1

A report of valgrind is stored to a directory where input.* file is
with name VALGRIND-${language}.tmp.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>