tcpdump: update to current upstream version 4.5.1

-size_of(old tcpdump-mini 4.2.1) = 145245 Byte
-size_of(new tcpdump-mini 4.5.1) = 149416 Byte
=> ~4.2 KByte increase

Signed-off-by: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>

SVN-Revision: 39474

package/network/utils/tcpdump/patches/001-remove_pcap_debug.patch

@@ -1,6 +1,6 @@
 --- a/tcpdump.c
 +++ b/tcpdump.c
-@@ -982,20 +982,6 @@ main(int argc, char **argv)
+@@ -1095,20 +1095,6 @@ main(int argc, char **argv)
  				error("invalid data link type %s", gndo->ndo_dltname);
  			break;