gotwebd: allow to change the user ok stsp@

got{,web}d: unify log.c gotd and gotwebd are using almost the same log.c file, so unify. This only slightly changes gotwebd logs to include the process name, like gotd. ok stsp@

gotwebd: mention the listening socket path under FILES ok stsp@

gotwebd: remove unix_socket_name Now that `listen' is a top-level, `unix_socket_name' is useless. The default socket remains /var/www/run/gotweb.sock, to listen on an alternate socket now `listen on socket "/some/other/sock" can be used. part of a larger diff that's ok stsp@

gotwebd: make `listen' a top-level statement gotwebd only uses the server name (i.e. the Host HTTP header) to match the server blocks. Since gotwebd by design sits behind an http server which is expected to filter virtual hosts, there's little point in having `listen' per-server. part of a larger diff that's ok stsp@

adjust gotwebd.conf(5) after recent change it's no longer required for the host:port tuple to be used only by one server.

gotwebd: simplify handling of unix sockets - don't assume an implicit "listen on socket" when another listen was specified in a server block - allow servers to share the sockets they're listening on - fix unix_socket_name; now it's actually used - remove `listen on socket off' and `unix_socket off' options that are now no longer useful - unify the internal handling of the sockets, i.e. don't consider unix socket special. ok tracey@

gotwebd: plug leak in get_addrs() error path h is free'd by add_addr in case of error, but we still leak the getaddrinfo result. while here make the check strictier: addr_addr() fails with -1.

got-fetch-http: be pedantic with the error checking these functions are expected to return -1 on failure, be strict about it.

fix function name in error message (again)

bufio: crank BIO_CHUNK up to 64k forgot it set to a low value when testing the resizing, the left way too low. prodded by stsp. ok stsp

fix function name in error message

fix got-fetch-http build with PROFILE=1

fix wrong errno check in bufio_close_sync() ok thomas_adam, op@

regress: replace userinfo(8) with the more common getent(1)