Issue #2487429: Proper fix for base URL, https support and remove some drush_get_option() calls by using d() instead.

Issue #2472607 Fix a bug exposed by CiviCRM 4.6.2 and cleanup _provision_civicrm_install_civicrm() - minor cleanup.

verify: fix provision_civicrm_provision_apache_vhost_config() function naming confusion. The hook was otherwise not being called in Aegir 2.x.

migrate: use the strict=false option, to avoid a BOA 2.3 bug when migrating sites (this should probably use a Provision service).

provision_civicrm.inc: function _provision_civicrm_is_site_context(): remove the  argument, which isn't used anymore.

Issue #2364871: issues with BOA 2.3 not loading the civicrm.drush.inc file if it's located in the install profile (added for verify/clone/migrate and a bit of cleanup).

Issue #2364871: issues with BOA 2.3 not loading the civicrm.drush.inc file if it's located in the install profile.

_provision_civicrm_upgradedb: show the upgrade output as a warning. Most civicrm upgrades show instructions that the user should read.

Update and fixurls: use functions from civicrm.drush.inc instead of duplicating the code (now possible since we use the version-specific civicrm.drush.inc from civicrm.)

Issue #1097554: README.txt: removing from TODO about civimail/membership crons, since now handled by hosting_civicrm_cron.

refs #2133493: remove civicrm.drush.inc to avoid 'Cannot redeclare civicrm_drush_command()' error in Aegir 2.x + avoid duplication/fork of civicrm.drush.inc.

v2/install.provision.inc: cleanup old checks for versions, since we have already checked at this point in the run.

In a migrate operation, the civicrm_version option is mysteriously not available. Until we fix that bug, better to assume we are running civicrm >= 4.2.