mbox_indexer

The main function of this code is to use mbox_parser to:

1. parse mbox files
2. add some metadata of top of it
3. get JSON document
4. send it via HTTP to search server for indexing

The metadata that is added is relevant to specific DCP configuration. Namely it is:

• project code project for project name (e.g. cdi, mod_cluster, jboss-l10n)
• add mail_list_category (announce, dev, users)
• provide sys_url_view value
• decide which field will be used for the sys_content
• provide sys_content_content-type value for selected sys_content
• populate sys_description with message_snippet