Factor/To do/Docs

• better compile errors documentation
• document how factor UI modifiers map to native modifiers
• rethink handbook organization
• document gesture handling differences
• document graft/ungraft idiom for GL resources
• more prominent mention of image saving
• document decode-input, encode-output

Done:

• document words.
• with-ui is undocumented
• document that macro expansions cannot involve lambdas
• 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