make provision configuration dir publicly read/executable so that bind can access the configuration directory

See: #269931
Patch by: Spiderman
Backported from: D6 branch

#343428 - move to proc_open, instead of exec, which makes the serialization parsing rock solid. Also, we can now pass an optional array to the calling script, which will allow us to not pass sensitive information over the command line

#343428 - better serialized string protection. not perfect due to weirdness in how exec handles spaces before newlines. Will need to switch to proc_open to fix this

Experimental update.php for DRUPAL 5. This is not integrated into any drush commands or the hosting front end yet

Replacement provision_invoke function which is a lot cleaner and simpler than the old one. It now automatically does pre_task, task and post_task variations, and handles rollbacks correctly across the whole set. This means broken site installs now roll back correctly.

Filter site.php to only show settings that are not configured in drushrc.php. No longer append options to site.php.

Move the provision help to hosting, severely reducing code duplication and simplifying provision even further

Patch by: Adrian
See: #340050

Part 1 of 3

moved the drupal installation process into it's own php process, to avoid cross db issues. much simpler now.

Fixed on-demand module loading. Add pre_verify and post_verify hooks. Added a script which clears existing drupal caches to allow new modules that have been enabled etc, to be picked up

new hook: provision_vhost_config, to add stuff to the apache config file for a given site, in the vhost context

(backport from head)

See: #338657
Backported from HEAD

See: #338657

See: #336431

Test if apache can be restarted during verify, and fix the documentation for the hostmaster mysql user (#336431)

Test if apache can be restarted during verify, and fix the documentation for the hostmaster mysql user (#336431)