Remove unused struct
Minor version bump
Add newline between functions
Move current line indicator
Use allm info to attach to existing threads

This remove reliance on the procfs for figuring out what threads are
already active when we attach to a running process. The allm linked list
will be present to matter what OS we're on, whereas procfs will not be
present everywhere.

This is the first in a series of steps to support more platforms.
Modify cl ui a bit
Fix format string
Support Go1.4rc1
Update README