add ~tem to ++  zeno
Merge pull request #82 from bvschwartz/pr

add ~tem to ++  zeno
Some chat and chat related fixes.
Merge branch 'master' of github.com:urbit/urbit
Various fixes and improvements...
Remove debug printf.
Fix escaping in ++wood.
Use ftruncate() to map checkpoint images as sparse files.
Fix a bunch of memory leaks and stuff.
Continuity breach and flag day...
Support ^R (reverse incremental search) in dill.

^G to cancel. Canceling should probably remember your previous
history position, but doesn't.

This adds a field to ++bead, so in the absence of proper migration
support, I've simply disabled dill's nest check in ++load. It works
in this case, presumably because dill's only bead is null during
:reboot.
Slay the line goblin.
No prefix for private messages.
Revert bad fix.
Actually fix the line goblin...
Continuity breach and flag day.
Eliminate deadly "lame" printf.
Change ^C to ^V in text
Fix bus errors with proper truncation.
Show passcode file on load.