Does ES 0.90.x have a built-in support for reindexing data from one index to another?

Does elasticsearch 0.90.x come with a out-of-box command or utility which
can be used by admins for reindexing data from one index to another? For
ex, if the mapping has changed.

I know of some php and perl alternatives:
*
http://euphonious-intuition.com/2012/08/reindexing-your-elasticsearch-data-with-scanscroll/
*
https://github.com/clintongormley/ElasticSearch.pm#reindex
but I find myself wonderign if this administrative task has been brought
into the core offering.

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