Added distcheck rule needed for test suite.

@@ -3,7 +3,7 @@ ACLOCAL_AMFLAGS = -I m4
 
 SUBDIRS = include doc m4 lib MySql mailbox frm from pop3d imap4d \
           mail sieve scripts libmu_scm guimb messages comsat readmsg \
-          mail.local mail.remote dotlock
+          mail.local mail.remote dotlock mh
 
 EXTRA_DIST = mailutils.spec mailutils.spec.in README-alpha COPYING.FDL
 
@@ -12,3 +12,33 @@ release:
 
 rpm: dist
 	rpm -ta --clean mailutils-$(VERSION).tar.gz
+
+
+## Override distcheck rule.
+distcheck: dist
+	$(am__remove_distdir)
+	GZIP=$(GZIP_ENV) gunzip -c $(distdir).tar.gz | $(AMTAR) xf -
+	chmod -R a-w $(distdir); chmod a+w $(distdir)
+	chmod -R u+w $(distdir)/mail/testsuite/spool;
+	chmod -R u+w $(distdir)/mail/testsuite/folder;
+	mkdir $(distdir)/=build
+	mkdir $(distdir)/=inst
+	chmod a-w $(distdir)
+	dc_install_base=`$(am__cd) $(distdir)/=inst && pwd` \
+	 && cd $(distdir)/=build \
+	 && ../configure --srcdir=.. --prefix=$$dc_install_base \
+	$(DISTCHECK_CONFIGURE_FLAGS) \
+	 && $(MAKE) $(AM_MAKEFLAGS) \
+	 && $(MAKE) $(AM_MAKEFLAGS) dvi \
+	 && $(MAKE) $(AM_MAKEFLAGS) check \
+	 && $(MAKE) $(AM_MAKEFLAGS) install \
+	 && $(MAKE) $(AM_MAKEFLAGS) installcheck \
+	 && $(MAKE) $(AM_MAKEFLAGS) uninstall \
+	 && $(MAKE) $(AM_MAKEFLAGS) dist-gzip \
+	 && rm -f $(distdir).tar.gz \
+	 && $(MAKE) $(AM_MAKEFLAGS) distcleancheck
+	$(am__remove_distdir)
+	@echo "$(distdir).tar.gz is ready for distribution" | \
+	 sed 'h;s/./=/g;p;x;p;x'
+ 
+