jquery/manipulation.html is very slow in debug builds, frequently timing out
https://bugs.webkit.org/show_bug.cgi?id=61932

Several fast/selectors tests are very slow in debug
https://bugs.webkit.org/show_bug.cgi?id=139634

* TestExpectations: Mark them as slow



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@177271 268f45cc-cd09-0410-ab3c-d52691b4dbfc
svg/filters/svg-deeply-nested-crash.html is slow in debug builds
https://bugs.webkit.org/show_bug.cgi?id=139638

Marked it as such. Also, added [ Debug ] to other tests that are slow in debug only.

* TestExpectations:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@177272 268f45cc-cd09-0410-ab3c-d52691b4dbfc