bug 909344 - load testcase 388367-1 as a crashtest rather than reftest. r=roc

--HG--
rename : layout/reftests/bugs/388367-1.html => layout/generic/crashtests/388367-1.html
bug 909344 - testcase 398332-3.html might not trigger assertions. r=roc
bug 909344 - render stray control characters as hexboxes instead of invisible. r=roc
bug 909344 - reftest for display of stray control characters. r=roc