SIGUSR2 shows processing statistics and internal states

When SIGUSR2 is sent to pcapdj the following information is displayed

Example:

[STATS] Start time:2013-06-09 09:17:50
[STATS] Uptime:423 (seconds)
[STATS] Internal state:Waiting for authorization
[STATS] Number of suspensions:0
[STATS] Number of files:2
[STATS] Number of packets:6346
[STATS] Number of cap_lengths:706730
[STATS] Number of lengths:706730