Don't use the getaddrinfo sandbox cache from tor-resolve

Fixes bug 13295; bugfix on 0.2.5.3-alpha.

The alternative here is to call crypto_global_init() from tor-resolve,
but let's avoid linking openssl into tor-resolve for as long as we
can.
Merge branch 'bug13295_v2_025' into maint-0.2.5
Merge remote-tracking branch 'origin/maint-0.2.5'
continue our habit of specifying the default in the manpage
Clear the cached address from resolve_my_address() when our IP changes

Closes 11582; patch from "ra".