Add documentation to ws_value_union_reinit()
Add missing memberof to documentation of ws_value_union_init_from_val()
Merge pull request #452 from neithernut/fix-value-union-documentation

Fix value union documentation
Change ws_object_hash() to return errno on failure
Get a ref on the object in ws_named_init()
Add comment why ws_error_reply_get_code() doesn't do locking
Add comment why ws_error_reply_get_description() doesn't do locking
Add comment why ws_error_reply_get_cause() doesn't do locking
Add getref() in ws_event_get_name()
Add locking in ws_transaction_push_statement()
Add locking in deinit_transaction()
Add note in ws_value_reply_get_value() why there is no locking