Regex Timeout are too short, not consistent, and not configurable in RewriteMiddleware

Regex timeouts that are used across UrlRewrite, ApacheModRewrite, and code rules are not consistent. The are set at 1 second or 1 millisecond in different places. Secondly, 1 millisecond is too short for a regex expression; it should be 1 second as the timeout is mostly for making sure your server isn't locked. Also if the expression timeouts, it returns a 500 server error as the exception is unhandled. Thirdly, the timeout should be configurable in RewriteOptions.

Plan of action:

• Timeouts should be increased to 1 second across the board.
• For 2.1, we should make Regex timeouts configurable a
• The timeouts should be backported to 2.0 and 1.1

@Eilon @muratg this is a patch candidate. Workarounds are very difficult.