improved IPnet
it was developed to debug the problem given by use of straight ethernet cables

the main improvement over old IPnet is: 
- the arp mechanism now really sends an arp request at a configurable frequency (now 10 Hz) until the timeout.
  before, the frequency was limited by the underlying stack at ... 1 hz.

there are other mechanisms which are actionable by defining a proper macro:
- it is possible to enable a debug function eom_ipnet_ResolveIP_TEST() by defining TEST_ARP macro.
  this function keeps on arping at 10 hz and prints over the LED0-->LED4 the time of operation in sec.
  it can also show activity over eventviewer by defining TEST_ARP_EVIEW and also print to debug port with TEST_ARP_PRINT
- it possible to enable a non blocking ARP function eom_ipnet_ResolveIPnonblocking() by defining IPNET_HAS_NON_BLOCKING_COMMAND
  the function does not block the calling tasks, but however blocks all calls to open a socket and other ARP requests.