Log Message:
Updated package to latest version, 2.6. Changes include:
 * Fix cryptographic-safe string generation
 * Fix performance bug in Deflatmod
 * Fix max-age cache control directive in Staticmod
 * Resend cache information with 304 (not modified) responses
 * Expose Ocsigen_request_info interface.
 * Wait for error message to be logged on shutdown (#81)
 * Lots of fixes, UTF-8-ization, cosmetics, etc.