Changelog:
- #178915 Always add a query string in hook_exit() if there are session messages to be shown (kudos to Barry Jaspan).
- Added Barry Jaspan to the credits in README.txt.

Corrected handling of 403/404 errors in relation to cached file creation (kudos to Barry Jaspan for the patch).

Changelog:
- #153179 Backported corrected front page handling and Boost page footer expiration time from 5.x branch (kudos to Axel).
- #103884 Backported .htaccess improvements from 5.x branch (kudos to Axel).
- Updated credits listing in README.txt.

Added code for module weight update to the install hook to ensure Boost is loaded early on in the Drupal bootstrap.

Added a hook_exit() handler to ensure session messages set on form submission will get shown on the next page despite that page having been cached by Boost.

Refactored recursive file expiry to avoid spurious watchdog warnings on non-empty directories (fixes #99646).

Documented the FollowSymLinks requirement and added note about using the HTML footer to determine whether a page response was dynamically generated or not.

Removed realpath() calls from symlink creation as they were causing different behavior on BSD vs Linux.