check_check: do setup regardless of availability of fork
check_check: do setup regardless of availability of fork

The tests originally protected by the HAVE_FORK check will
work if fork is unavailable. Further, setup() does work that
is required by the tests which follow.

git-svn-id: caee63afe878fe2ec7dbba394a86c9654d9110ca@773 64e312b2-a51f-0410-8e61-82d0ca0eb02a

svn2github/check,svn2github/check,svn2github/check,dashaomai/check-code,dashaomai/check-code,svn2github/check,dashaomai/check-code,dashaomai/check-code,svn2github/check