update nmap to 4.20 (patch by jens muecke)

git-svn-id: svn://svn.openwrt.org/openwrt/packages@6008 3c298f89-4303-0410-b956-a3cf2f4a3e73

net/nmap/patches/01-cross_compile.patch

@@ -4,20 +4,7 @@
 diff -ruN nmap-4.01-old/configure nmap-4.01-new/configure
 --- nmap-4.01-old/configure	2006-02-02 03:18:42.000000000 +0100
 +++ nmap-4.01-new/configure	2006-10-23 22:08:15.000000000 +0200
-@@ -5765,9 +5765,9 @@
- 
- fi;
- 
--if test $linux = yes; then
--  have_libpcap=no
--fi
-+#if test $linux = yes; then
-+#  have_libpcap=no
-+#fi
- 
- if test $needs_cpp_precomp = yes; then
-   CXXFLAGS="-no-cpp-precomp $CXXFLAGS"
-@@ -5788,8 +5788,8 @@
+@@ -5865,8 +5865,8 @@
    echo "$as_me:$LINENO: checking if libpcap version is recent enough" >&5
  echo $ECHO_N "checking if libpcap version is recent enough... $ECHO_C" >&6
    if test "$cross_compiling" = yes; then