Add Win32 Makefile for IPC stuff.

src/backend/port/win32/Makefile

+#-------------------------------------------------------------------------
+#
+# Makefile--
+#    Makefile for port/win32
+#
+# IDENTIFICATION
+#    $Header: /cvsroot/pgsql/src/backend/port/win32/Makefile,v 1.1 2003/04/24 21:25:34 momjian Exp $
+#
+#-------------------------------------------------------------------------
+
+subdir = src/backend/port/win32
+top_builddir = ../../../..
+include $(top_builddir)/src/Makefile.global
+
+OBJS = sema.o shmem.o
+
+all: SUBSYS.o
+
+SUBSYS.o: $(OBJS)
+	$(LD) $(LDREL) $(LDOUT) SUBSYS.o $(OBJS)
+
+depend dep:
+	$(CC) -MM $(CFLAGS) *.c >depend
+
+clean: 
+	rm -f SUBSYS.o $(OBJS)
+
+ifeq (depend,$(wildcard depend))
+include depend
+endif