Web Applications 1.0 r5298 Coalesce text nodes even if they're not parser-inserted.Fixing http://www.w3.org/Bugs/Public/show_bug.cgi?id=10221

Add a description of Web Applications 1.0 r5298 Coalesce text nodes even if they're not parser-inserted.Fixing http://www.w3.org/Bugs/Public/show_bug.cgi?id=10221