Refactor configure script detection of functions used to set sockets into

non-blocking mode, and decouple function detection from function capability.

src/Makefile.netware

@@ -449,12 +449,13 @@ endif
 	@echo $(DL)#define HAVE_ASSERT_H 1$(DL) >> $@
 	@echo $(DL)#define HAVE_ERR_H 1$(DL) >> $@
 	@echo $(DL)#define HAVE_FCNTL_H 1$(DL) >> $@
-	@echo $(DL)#define HAVE_FIONBIO 1$(DL) >> $@
 	@echo $(DL)#define HAVE_GETHOSTBYADDR 1$(DL) >> $@
 	@echo $(DL)#define HAVE_GETHOSTBYNAME 1$(DL) >> $@
 	@echo $(DL)#define HAVE_GETPROTOBYNAME 1$(DL) >> $@
 	@echo $(DL)#define HAVE_GMTIME_R 1$(DL) >> $@
 	@echo $(DL)#define HAVE_INET_ADDR 1$(DL) >> $@
+	@echo $(DL)#define HAVE_IOCTL 1$(DL) >> $@
+	@echo $(DL)#define HAVE_IOCTL_FIONBIO 1$(DL) >> $@
 	@echo $(DL)#define HAVE_LL 1$(DL) >> $@
 	@echo $(DL)#define HAVE_LOCALE_H 1$(DL) >> $@
 	@echo $(DL)#define HAVE_LOCALTIME_R 1$(DL) >> $@

src/config-riscos.h

@@ -374,5 +374,8 @@
 
 #define IOCTL_3_ARGS
 
-#define HAVE_FIONBIO
+/* Define if you have the ioctl function. */
+#define HAVE_IOCTL
 
+/* Define if you have a working ioctl FIONBIO function. */
+#define HAVE_IOCTL_FIONBIO

src/config-win32.h

@@ -72,15 +72,21 @@
 /*                             FUNCTIONS                            */
 /* ---------------------------------------------------------------- */
 
-/* Define if you have the setmode function. */
-#define HAVE_SETMODE 1
-
 /* Define if you have the ftruncate function.  */
 #define HAVE_FTRUNCATE 1
 
+/* Define if you have the ioctlsocket function. */
+#define HAVE_IOCTLSOCKET 1
+
+/* Define if you have a working ioctlsocket FIONBIO function. */
+#define HAVE_IOCTLSOCKET_FIONBIO 1
+
 /* Define if you have the setlocale function.  */
 #define HAVE_SETLOCALE 1
 
+/* Define if you have the setmode function. */
+#define HAVE_SETMODE 1
+
 /* Define if you have the strcasecmp function. */
 /* #define HAVE_STRCASECMP 1 */