configure: Fix to allow option values containing '=' (thanks Jakub)

net/dns: Fix socket.select timeout.

Merge 0.7->trunk

Merge 0.6->0.7

net/httpserver_listener: Ignore empty strings on incoming data.

Merge 0.7->trunk

Merge 0.7/MattJ with 0.7

Merge with 0.6

mod_bosh: Always give requests a destroy handler, so that the management of each session's request array and the inactive_sessions logic can happen in one place. Simplifies everything and concludes this series of BOSH fixes.

mod_bosh: Fix handling of rids by not dropping requests with repeated rids (assign them their sid instead), and always starting a session with first_rid-1.