Changes in 0.6.1:

 - fix g++5 warnings and errors
 - libstatgrab no longer default configure option, remove dependency on most distributions
 - fix to work with libstatgrab-0.90
 - usleep return value check Creator: Alexey Zakharov
 - fix Wrong TX value in plain data (bug ID 1797088).
 - fix Dynamic multiplier for bits is now set to x1000 (1kbit = 1000 bits, 1Mbit = 10^6 bits, ...),
   instead of x1024, which applies only for bytes.
 - fix some little typos in the man page. Creator: Ricardo
 - delete unused interfaces from internal interface-list
 - code cleanup due to gcc flags 
 - fix bug with attached patch: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=506503
 - fix missing flush to tmp file in csv output
 - fix same values for rx and tx on plain output
 - add csv output specs to man page