Add cloexec() and xfree() to libroken

lib/roken/NTMakefile

@@ -37,6 +37,7 @@ libroken_la_OBJS =			\
 	$(OBJ)\base64.obj		\
 	$(OBJ)\bswap.obj		\
 	$(OBJ)\concat.obj		\
+	$(OBJ)\cloexec.obj		\
 	$(OBJ)\dirent.obj		\
 	$(OBJ)\dlfcn_w32.obj		\
 	$(OBJ)\dumpdata.obj		\
@@ -102,7 +103,8 @@ libroken_la_OBJS =			\
 	$(OBJ)\vwarnx.obj		\
 	$(OBJ)\warn.obj			\
 	$(OBJ)\warnerr.obj		\
-	$(OBJ)\warnx.obj
+	$(OBJ)\warnx.obj		\
+	$(OBJ)\xfree.obj
 
 {}.c{$(OBJ)}.obj:
 	$(C2OBJ) -DBUILD_ROKEN_LIB

lib/roken/cloexec.c

@@ -33,14 +33,12 @@
 
 #include <config.h>
 
-#include <unistd.h>
-#include <fcntl.h>
-
 #include "roken.h"
 
 void ROKEN_LIB_FUNCTION
 rk_cloexec(int fd)
 {
+#ifdef HAVE_FCNTL
     int ret;
 
     ret = fcntl(fd, F_GETFD);
@@ -48,10 +46,13 @@ rk_cloexec(int fd)
 	return;
     if (fcntl(fd, F_SETFD, ret | FD_CLOEXEC) == -1)
         return;
+#endif
 }
 
 void ROKEN_LIB_FUNCTION
 rk_cloexec_file(FILE *f)
 {
+#ifdef HAVE_FCNTL
     rk_cloexec(fileno(f));
+#endif
 }

lib/roken/xfree.c

@@ -33,8 +33,6 @@
 
 #include <config.h>
 
-#include <unistd.h>
-
 #include "roken.h"
 
 void ROKEN_LIB_FUNCTION