changes since beta7:
removed the deprecated entity metadata module.
#1093918 improve entity property query support
#1081188 patch by drunken monkey: entity_view() for comments is broken
#1071814 patch by klausi: Type of boolean fields is int
#1092240 patch by scor: Minor code style tweak.
#1062358 patch by klausi, fago: Delete should be more robust with an empty array of ids.
#1066398 patch by sun, fago: Reverse entity relationships for Views integration.
added a template suggestion incorporating the view mode
#1071710 patch by klausi: Notices and warnings in entity_metadata_field_query()
fixed notices in field_attach_prepare_view() if used for exportable entities.
#1074070 patch by linclark: Entities don't contain RDF type or about URI.
fixed the wrapper to ensure the entity is loaded before calling delete.
Stripping CVS keywords
#913962 added current path and URL properties for usage with Rules.
#1071316 patch by rszrama: fixed PHP Fatal error due to accidentily commiting a patch twice. ouch.
#1063898 fixed unsetting property values with the wrappers.