Log Message:
Changes 2.16.4:
* fix "P_DETACH" and Pod::Usage issues with perl 5.12
* relax cfgmaker option parsing when figuring whether to test for highspeed
  counters or not.
* fix sorting of numbered interface names index maker
* belarusian translation for mrtg 2.16

Changes 2.16.3:
* three new config options to compliment the existing
  RRDRowCount option to explicitly set the size of all RRAs
* allow to rename target in the clonedirectory option
* add import to the require File::Copy
* support multiple options in ifdesc and ifref setting for cfgmaker
* teach cfgmaker about nortel switches
* make sure rates over 4G work too
* allow group and user option to be set to roo