Updated installation profile to 7.x-2.0-beta8
PT-831 - Updated the Petitions installation profile to build with Drupal core 7.21
PT-873 - Removed clean_mongo, clean_mongo() calls, and added requirement for Mongo 2.2.4.
PT-876 - Updated petitions_data to include an admin form to set base URLs to be used when generating links
PT-878 - Updated shunt module to implement shunt_enable() and shunt_disable() as described in README roadmap, enable a drush interface, and update the configuration path. Updated shunt_api module to prevent memcache problems when shunt is tripped.

	modified:   INSTALL.md
	modified:   README.md
	modified:   UPDATE.txt
	modified:   build-petitions.make
	deleted:    modules/custom/clean_mongo/clean_mongo.info
	deleted:    modules/custom/clean_mongo/clean_mongo.module
	modified:   modules/custom/petitions_data/classes/PetitionLoadMongoRaw.class.inc
	modified:   modules/custom/petitions_data/classes/PetitionsMongoRaw.class.inc
	modified:   modules/custom/petitions_data/classes/SignaturesMongoRaw.class.inc
	modified:   modules/custom/petitions_data/petitions_data.module
	modified:   modules/custom/shunt/README.txt
	modified:   modules/custom/shunt/modules/shunt_api/shunt_api.module
	new file:   modules/custom/shunt/shunt.api.php
	new file:   modules/custom/shunt/shunt.drush.inc
	modified:   modules/custom/shunt/shunt.module
	modified:   modules/custom/wh_petitions/wh_petitions.pages.inc
PT-878 - Minor bug fix. Remove call to drush_sitealias_bootstrapped_site_name().

	modified:   shunt.drush.inc
PT-878 - Have shunt module implement its own submit handler for config form.

This wraps shunt_enable/disable() around shunt tripping via GUI and gives
implementers of hook_shunt_enable/disable() a chance to fire.

	modified:   shunt.module
PT-878 - Replace direct calls to variable_get/set() with shunt_enable/disable().

Update variable names. *_is_enabled convention is outdated now.

	modified:   modules/shunt_api/shunt_api.module
PT-878 - Streamline handling of db cleanup when modules with shunts are uninstalled.

	modified:   shunt.module
PT-878 - Now shunt module handles db cleanup when shunt modules are uninstalled.

	modified:   modules/shunt_api/shunt_api.install
	modified:   shunt.install
PT-878 - Add quotes in drupal_set_message(). Easier to read.

	modified:   shunt.module
Merge pull request #1 from bryanhirsch/7.x-2.x