#491 (Oct 3, 2016, 1:16:05 PM)

1. clarified magic values (see also java/io/BufferedInputStream.java); (detail / hgweb)
2. clarified stream operations;
   added XZ data compression; (detail / hgweb)
3. tuned signature; (detail / hgweb)
4. clarified modules;
   afford explicit string composition in terminate_lines; (detail / hgweb)
5. more general read_stream: return actual byte count; (detail / hgweb)
6. clarified modules; (detail / hgweb)

Started by an SCM change

This run spent:

• 5 min 3 sec waiting;
• 1 hr 31 min build duration;
• 1 hr 36 min total from scheduled to completion.