[XMLHttpRequest-tests][cors-tests][eventsource-tests][ext-xhtml-pubid-tests][old-tests][webmessaging-tests] Remove executable bit from files which aren't executable (#428)

My shell sends its regards:

./cues.html: line 1: syntax error near unexpected token `newline'
./cues.html: line 1: `<!doctype html>'

View on GitHub: https://github.com/w3c/web-platform-tests/pull/428

Received on Monday, 11 November 2013 12:22:54 UTC