fix for bb #500
change printf calls in sxinit --list to use stdout (bb #496)
Add --bandwidth-limit option to sxls
only set timediff on 401
sxadm: use --owner instead of --run-as (bb#503)
Revert "Add --bandwidth-limit option to sxls"

This reverts commit 74a8f106dee7e58f89c30fbc6b1051743220987f.
sxsetup cleanup
sxserver: drop /data subdir from SX_DATA_DIR
update paths in start-nginx
http port interface
sxinit --port support
sxadm --port support
hashfs port support
port support in node add
use --port in sxsetup, and require root only for port <= 1024
downgrade FCGX_P* messages as they really only trigger
because the client has closed the connection
sxsetup: support --port; --advanced can now perform fully unprivileged node setup
sxsetup no longer supports custom ports, update to use hardcoded 5080/5443
use SX_PORT
filters: make library names consistent and compatible with Android (bb#498)
install sx.h (bb#516)