AC_C_LONG_DOUBLE): Undo 2004-06-04 change.
2004-08-19 Paul Eggert <eggert@cs.ucla.edu>
+ * lib/autoconf/c.m4 (AC_LANG_BOOL_COMPILE_TRY(C),
+ AC_C_LONG_DOUBLE): Undo 2004-06-04 change, as it didn't work with
+ HP-UX 11.23 cc/aCC or Tru64 4.0 cc. Problem reported by Noah Misch in
+ <http://lists.gnu.org/archive/html/autoconf/2004-07/msg00004.html>.
+
More fixes to support spaces in the name of the build directory.
This isn't a complete fix but it's an improvement.