This patch can go upstream, regardless of the jemalloc update
eventually.
Also I noticed that header with jemalloc version differs (someone forgot
to update?)
* Added jemalloc as submodule [#CLICKHOUSE-2]
* Imported jemalloc-cmake [#CLICKHOUSE-2]
* Added README for jemalloc-cmake [#CLICKHOUSE-2]
* Trying to add jemalloc [#CLICKHOUSE-2]
* Trying to add jemalloc [#CLICKHOUSE-2]
* Trying to add jemalloc [#CLICKHOUSE-2]
* Add support for jemalloc: development [#CLICKHOUSE-2]
* Add support for jemalloc: development [#CLICKHOUSE-2]
* Add support for jemalloc: development [#CLICKHOUSE-2]
* Add support for jemalloc: development [#CLICKHOUSE-2]
* Add support for jemalloc: development [#CLICKHOUSE-2]
* Add support for jemalloc: development [#CLICKHOUSE-2]
* Add support for jemalloc: development [#CLICKHOUSE-2]
* Add support for jemalloc: development [#CLICKHOUSE-2]
* Add support for jemalloc: development [#CLICKHOUSE-2]
* Add support for jemalloc: development [#CLICKHOUSE-2]
* Add support for jemalloc: development [#CLICKHOUSE-2]
* Add support for jemalloc: development [#CLICKHOUSE-2]
* Add support for jemalloc: development [#CLICKHOUSE-2]
* Add support for jemalloc: development [#CLICKHOUSE-2]