$NetBSD$

Fix string comparison with "==" to portable "=" sh syntax.

--- fltk2-config.in.orig	2012-03-23 05:49:17.000000000 +0000
+++ fltk2-config.in
@@ -254,10 +254,10 @@ fi
 #
 case `uname -s` in
     MINGW*)
-	if test "$includedir" == /usr/include; then
+	if test "$includedir" = /usr/include; then
 	  includes=-I$includedir
 	fi
-	if test "$libdir" == /usr/lib; then
+	if test "$libdir" = /usr/lib; then
 	  libs=-L$libdir
 	fi
 	;;