trunk: build system updates

* top-level Makefile now generated
* automatic rules for regenerating configure and Makefiles
* enhanced source tarball creation (no longer destroys SVN subdirs)


git-svn-id: https://www.dynare.org/svn/dynare/trunk@2734 ac1d8469-bf42-47a9-8791-bf33cf982152

Makefile.in

@@ -9,3 +9,6 @@ endif
 clean:
 	rm -f macroprocessor.pdf *.toc *.aux *.log *.nav *.snm *.vrb *.out *~
 .PHONY: clean
+
+Makefile: Makefile.in ../../config.status
+	cd ../.. && ./config.status