Add "history" CLI command

- Remove the '?' mechanism that previously only worked on telnet
  connections in favor of a more shell-like "history" command.
  The '?' approach had strange side-effects, like executing what
  was already in the command buffer.

Change-Id: I043086b7f400c66c332a32dbd06ef580ecb18ee8
Signed-off-by: Chris Luke <chrisy@flirble.org>
1 file changed