Log Message:
Update ruby-activerecord31 to 3.1.11.

## Rails 3.1.11 (unreleased) ##

*   Quote numeric values being compared to non-numeric columns. Otherwise,
    in some database, the string column values will be coerced to a numeric
    allowing 0, 0.0 or false to match any string starting with a non-digit.

    Example:

        App.where(apikey: 0) # => SELECT * FROM users WHERE apikey = '0'

    *Dylan Smith*