Add direct message capability.
Also adds rudimentry error checking on both updates and direct messages.
Update the man page to show direct message ability.
Add direct message action.
Merge https://github.com/gregkh/bti

Conflicts:
	bti.1
	bti.c

Bring in all latest changes to the paulrho branch
Better error checking
Use twitter to detect >140 chars
Typo fix
write status update and direct message with json url
read json error messages
include JSON library
guard against a pre 0.10 json library bug
another json pre10 issue to work around
Enable showing timeline: friends, user
(public does not work)
fix up coding style differences generated in the json parsing functions