Avoid using dllwrap to build pgevent in Mingw builds.

If this works, we can get rid of configure's support for locating dllwrap
... but let's see what the buildfarm says, first.

Hiroshi Inoue

src/bin/pgevent/Makefile

@@ -17,30 +17,21 @@ include $(top_builddir)/src/Makefile.global
 ifeq ($(PORTNAME), win32)
 
 OBJS=pgevent.o pgmsgevent.o
-NAME=pgevent.dll
+NAME=pgevent
 
-all: $(NAME)
+SHLIB_LINK =
+SHLIB_EXPORTS = exports.txt
+
+all: all-lib
 
 install: all install-lib
 
-pgevent.dll: pgevent.def $(OBJS)
-	$(DLLWRAP) --def $< -o $(NAME) $(OBJS)
+include $(top_srcdir)/src/Makefile.shlib
 
 pgmsgevent.o: pgmsgevent.rc win32ver.rc
 	$(WINDRES) $< -o $@ --include-dir=$(top_builddir)/src/include --include-dir=$(top_srcdir)/src/include --include-dir=$(srcdir) --include-dir=.
 
-all-lib: $(NAME)
-
-install-lib: $(NAME)
-	$(INSTALL_STLIB) $< '$(DESTDIR)$(libdir)/$<'
-
-uninstall-lib:
-	rm -f '$(DESTDIR)$(libdir)/$(NAME)'
-
-clean distclean:
-	rm -f $(OBJS) $(NAME) win32ver.rc
-
-clean-lib:
-	rm -f $(NAME)
+clean distclean: clean-lib
+	rm -f $(OBJS) win32ver.rc
 
 endif

src/bin/pgevent/exports.txt

+; dlltool --output-def pgevent.def pgevent.o pgmsgevent.o
+EXPORTS
+	DllUnregisterServer@0 ;
+	DllRegisterServer@0 ;
+	DllInstall ;