Changed the parsing a conditional expression in a test status file to look for 'if' and not 'IF' as all the status files use 'if'.

This change catches the regression from r646.
Review URL: http://codereview.chromium.org/8739

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@662 ce2b1a6d-e550-0410-aec6-3dcde31c8c00