* Added manual pages for fstrm_capture and fstrm_dump.
* Added new tool, fstrm_replay, for replaying saved Frame Streams data
to a socket connection.
* Adds TCP support. Add tcp_writer to the core library which
implements a bi-directional Frame Streams writer as a TCP socket
client. Introduces new developer API: fstrm_tcp_writer_init,
fstrm_tcp_writer_options_init, fstrm_tcp_writer_options_destroy,
fstrm_tcp_writer_options_set_socket_address, and
fstrm_tcp_writer_options_set_socket_port.
* fstrm_capture: new options for reading from TCP socket.
* fstrm_capture: add "-c" / "--connections" option to limit the
number of concurrent connections it will accept.
* fstrm_capture: add "-b / --buffer-size" option to set the read buffer
size (effectively the maximum frame size) to a value other than the
default 256 KiB.
* fstrm_capture: skip oversize messages to fix stalled connections
caused by messages larger than the read highwater mark of the input
buffer. Discarded messages are logged for the purposes of tuning
the input buffer size.
* fstrm_capture: complete sending of FINISH frame before closing
connection.
* Various test additions and improvements.