Swift config-ref: include some unused tables

Several configuration options tables were not included in the config-ref
for swift. This patch includes most of those tables.

Remove the swift-swift-bench-bench.xml table (swift-bench is not part of
the swift repository anymore).

The realm synchronization tables are not included, they need a proper
documentation (coming in another patch).

Change-Id: Id7be936b02e3932e32ebd2468884df58ebd2b9b7
Merge "Swift config-ref: include some unused tables"