Can't rely on #!-line to always work

Got test failures containing this:
sh: ../blib/script/nytprofcalls:
/tmp/perl-czvfhwdgysrqysahskdlvqhkffrhnihqxdvhrzoxxgjaxdddresdsiyzpsxljpzdtaxm:
bad interpreter: No such file or directory
Error status 32256 from ../blib/script/nytprofcalls nytprof_test01.out -stable
Merge pull request #3 from gisle/master

Can't rely on #!-line to always work