A VPATH build fails to install bash.info (in Versions 3.x this
	file is in the build tree, not in the source tree!).

	The patch (inspired by automake) covers both possibilities.

diff -ur bash-3.2.orig/doc/Makefile.in bash-3.2/doc/Makefile.in
--- bash-3.2.orig/doc/Makefile.in	2004-07-27 14:57:48.000000000 +0200
+++ bash-3.2/doc/Makefile.in	2007-03-28 22:22:04.000000000 +0200
@@ -225,7 +225,8 @@
 	-$(INSTALL_DATA) $(srcdir)/bashbug.1 $(DESTDIR)$(man1dir)/bashbug${man1ext}
 # uncomment the next line to install the builtins man page
 #	-$(INSTALL_DATA) $(srcdir)/builtins.1 $(DESTDIR)$(man1dir)/bash_builtins${man1ext}
-	-$(INSTALL_DATA) $(srcdir)/bash.info $(DESTDIR)$(infodir)/bash.info
+	-if test -f bash.info; then d=.; else d=$(srcdir); fi; \
+	  $(INSTALL_DATA) $$d/bash.info $(DESTDIR)$(infodir)/bash.info
 # run install-info if it is present to update the info directory
 	if $(SHELL) -c 'install-info --version' >/dev/null 2>&1; then \
 		install-info --dir-file=$(DESTDIR)$(infodir)/dir $(DESTDIR)$(infodir)/bash.info; \