$NetBSD$

Take care of NetBSD so that we can link with -lperfuse in makefile.
--- configure.orig	2010-08-24 09:28:13.000000000 +0200
+++ configure	2010-08-24 09:31:20.000000000 +0200
@@ -788,8 +788,10 @@
 LTLIBOBJS
 LIBOBJS
 BSD_FALSE
 BSD_TRUE
+NETBSD_FALSE
+NETBSD_TRUE
 LINUX_FALSE
 LINUX_TRUE
 subdirs2
 INIT_D_PATH
@@ -12082,8 +12084,9 @@
 fi
 
 case $target_os in
      *linux*)	arch=linux;;
+     *netbsd*)	arch=netbsd;;
      *bsd*)	arch=bsd;;
      *)		arch=unknown;;
 esac
 
@@ -13671,8 +13674,16 @@
   LINUX_TRUE='#'
   LINUX_FALSE=
 fi
 
+ if test "$arch" = netbsd; then
+  NETBSD_TRUE=
+  NETBSD_FALSE='#'
+else
+  NETBSD_TRUE='#'
+  NETBSD_FALSE=
+fi
+
  if test "$arch" = bsd; then
   BSD_TRUE=
   BSD_FALSE='#'
 else
@@ -13822,8 +13833,15 @@
 $as_echo "$as_me: error: conditional \"LINUX\" was never defined.
 Usually this means the macro was only invoked conditionally." >&2;}
    { (exit 1); exit 1; }; }
 fi
+if test -z "${NETBSD_TRUE}" && test -z "${NETBSD_FALSE}"; then
+  { { $as_echo "$as_me:$LINENO: error: conditional \"NETBSD\" was never defined.
+Usually this means the macro was only invoked conditionally." >&5
+$as_echo "$as_me: error: conditional \"NETBSD\" was never defined.
+Usually this means the macro was only invoked conditionally." >&2;}
+   { (exit 1); exit 1; }; }
+fi
 if test -z "${BSD_TRUE}" && test -z "${BSD_FALSE}"; then
   { { $as_echo "$as_me:$LINENO: error: conditional \"BSD\" was never defined.
 Usually this means the macro was only invoked conditionally." >&5
 $as_echo "$as_me: error: conditional \"BSD\" was never defined.
