* configure, aclocal.m4, Makefile.am: Rebuilt.
	* configure.in: Pass `--with-auxdir' to subdir configure.  Don't
	call AC_CONFIG_AUX_DIR or AC_CANONICAL_SYSTEM.  Look for unwind.h
	relative to libgcj_basedir.
	* acinclude.m4 ((LIBGCJ_CONFIGURE): Call AC_CONFIG_AUX_DIR and
	AC_CANONICAL_SYSTEM here.
	* Makefile.am (CONFIG_STATUS_DEPENDENCIES): Use srcdir, not
	libgcj_basedir.
	($(extra_headers)): New target.

From-SVN: r43034