Factor/To do/Docs

Done:

• This should be a help article: http://factor-language.blogspot.com/2008/05/ssltls-support-added.html
• document locals in literals feature
• document see-methods
• document io.encodings.string
• . and pprint: add a warning about large objects
• mention help word, and C+S+h more prominently in cookbook
• better compile errors documentation