[NETFRAME] keeping timestamps from pcap

[Artur Bergman]

with keepTimestamp, the unpack in the Frame Obect that creates a new  
frame object lost the timestamp, so passing it along fixes it

artur

--- .cpan/build/Net-Packet-3.25/lib/Net/Packet/Frame.pm 2006-12-16  
07:27:32.000000000 -0800
+++ /Library/Perl/5.8.6/Net/Packet/Frame.pm     2007-08-17  
12:59:51.000000000 -0700
@@ -222,7 +222,7 @@
        $prev = $l;
        unless ($frames[$n]) {
-         $frames[$n] = Net::Packet::Frame->new;
+         $frames[$n] = Net::Packet::Frame->new(timestamp => $self- 
 >timestamp);
           $frames[$n]->[$__raw] = $oRaw;
           # We strip the payload for last layer of previously built  
frame,