Add program_options to the regression tests.

[SVN r22825]

status/Jamfile

@@ -30,6 +30,7 @@ subinclude libs/numeric/interval/test ;  # test-suite interval
 subinclude libs/multi_array/test ;       # test-suite multi_array
 subinclude libs/multi_index/test ;       # test-suite multi_index
 subinclude libs/optional/test ;          # test-suite optional
+subinclude libs/program_options/test ;   # test-suite program_options
 subinclude libs/python/test ;            # test-suite python
 subinclude libs/random/test ;            # test-suite random
 subinclude libs/regex/test ;             # test-suite regex