* Migrate differential ping.

* Added migration groups

* Make RES transmission limit and timeout configurables.

* Implement Migrate::prepare() from destination class

* Keep track of migrated entities

* Fix the stub creation process during migrations.

* Fixing Drush 5 support

* Switching to MigrateDestinationEntityAPI for base migrate class

* Make bundle optionnal in migrations

* Fixing "res_pre_schema" hook

* Fixing addFieldMapping visibility

* Adding advancedqueue dependency.
* Adding migrate remote pings.
* Adding highwater field support.

- also: added bojanz' MigrateDestinationResEntityAPI
- fixed wording to core standard: entity_type vs entity_name, bundle vs bundle_name
- API updated for batch mode
- no longer issue a count() RPC call on rewind()
- simplified flattening and make it more languge-resilient

Refactored ResMigration::addFieldMappings() from concrete migration classes to ResMigration to simplify them.

- specific hook_res_post_load_alter() implementation to support term parents

- introduce ResMigration and MigrateResFieldMapping to work around the flat key array problem
- migrations can now add "flattened()" to a migration mapping to use field flattening/unflattening

- default view created, mostly equivalent with the hardcoded version for admin/content/migrate_remote/(rcid)

Conflicts:
	res.module

- $base is now needed for all xmlrpc calls
- add hook_pre|post_schema
- add hook_pre|post_count
- add hook_pre|post_load
- restored a php PI accidentally removed from the default view

- A quick check suggests this will also work for CommerceProduct
- underlying code bug at http://drupal.org/node/1054162

- default view was missing a php start tag
- prepare() was missing parameters to match its parent's signature

- new MigrateDestinationRes class
- the bundle key from the entity is no longer removed from the list of fields in MigrateSourceRes

- removes the prepare() phase to avoid any field handler intervention

- new "created" column on res_token
- res_expire_tokens($max_age = NULL) to expire old tokens
- res_cron to trigger res_expire_tokens() periodically.
- new res.admin.inc file
- new res_settings_form()
- renamed view secondary tab to fit wit the new settings tab

- added Views integration on res and migrate_remote modules
- defined a default view for RES clients and exposed res_client table

- shortened the token to use the rcid from res_client instead of ip_address()