regress-demangle: New file.

regress-demangle: New file.

	* testsuite/regress-demangle: New file.
	* testsuite/demangle-expected: New file.
	* Makefile.in (all, check, installcheck, info, install-info,
	clean-info, dvi, install, etags, tags, mostlyclean, clean,
	distclean, maintainer-clean, realclean): Depend on corresponding
	`-subdir' target.
	(all-subdir check-subdir installcheck-subdir info-subdir
	install-info-subdir clean-info-subdir dvi-subdir
	install-info-subdir etags-subdir mostlyclean-subdir clean-subdir
	distclean-subdir maintainer-clean-subdir): New target.
	* testsuite/Makefile.in: New file.
	* configure: Rebuilt.
	* configure.in: Create testsuite/Makefile.

From-SVN: r26205