Fix build on 4.x

Approved by: maintainer via barner@

lang/kawa/Makefile

@@ -27,10 +27,6 @@ INFO=			kawa kawa-tour
 
 .include <bsd.port.pre.mk>
 
-.if ${OSVERSION} < 500000
-IGNORE=		does not compile on FreeBSD 4.x
-.endif
-
 pre-patch:
 	@${FIND} ${WRKSRC} -name "Makefile.in" | ${XARGS} ${REINPLACE_CMD} \
 		-e 's|sed |gsed |g;' \

lang/kawa/files/patch-bin_kawapath.c

@@ -0,0 +1,15 @@
+
+$FreeBSD$
+
+--- bin/kawapath.c.orig
++++ bin/kawapath.c
+@@ -15,8 +15,8 @@
+   const char *path = getenv("KAWALIB");
+   if (path == NULL)
+     {
+-      path = kawalib;
+       const char *rp = progname == NULL ? NULL : strrchr(progname, '/');
++      path = kawalib;
+       if (rp != NULL)
+ 	{
+ 	  /* If kawa is executed "in place" as $builddir/bin/kawa