MFC r270180:

r269906:

 Add missing BSD.tests.dist entry for lib/libutil to unbreak installworld with
 MK_TESTS == no

 Phabric: D555
 Approved by: jmmv (mentor, implicit)
 Pointyhat to: ngie

r269904:

 Integrate lib/libutil into the build/kyua

 Remove the .t wrappers

 Rename all of the TAP test applications from test-<test> to
 <test>_test to match the convention described in the TestSuite
 wiki page

 humanize_number_test.c:

 - Fix -Wformat warnings with counter variables
 - Fix minor style(9) issues:
 -- Header sorting
 -- Variable declaration alignment/sorting in main(..)
 -- Fit the lines in <80 columns
 - Fix an off by one index error in the testcase output [*]
 - Remove unnecessary `extern char * optarg;` (this is already provided by
   unistd.h)

 Phabric: D555
 Approved by: jmmv (mentor)
 Obtained from: EMC / Isilon Storage Division [*]
 Submitted by: Casey Peel <cpeel@isilon.com> [*]
 Sponsored by: EMC / Isilon Storage Division