v1.7.9.9

Added cache stats functionality, fixed a security bug.

Added

• Cache stats applet
• Various cache stats

Changed

• Separate cache manager file/applet
• Rename manager_uri to uri for reuse
• Simplify default key, use uri instead of path.delimiter.query

Fixed

• A security bug which can bypass ACL by tampering with Host header(Thanks to Dan Reif)