- liCreateTimestamp isn't set in TCP tables on several Windows versions. If it isn't, then we can't compare it to the current system time; so don't.
- GetInterfaceName had some test failures unique to Vista, guard them.
- icmp: Accept either ERROR_INVALID_HANDLE or ERROR_INVALID_PARAMETER as a last error in a couple tests.
- Make the reply buffer for IcmpSendEcho large enough to hold the reply,
even when testing a smaller size. This avoids a buffer overflow with ROS's
broken implementation.
- Avoid unnecessary initialization.
- Fix IcmpSendEcho return value check to succeed on Win2003.
- Don't free a string literal in the GetInterfaceName test.
