* acinclude.m4: Include no-executables.m4.
* aclocal.m4: Rebuild.
* configure.in: Convert to the autoconf 2.59 version of
of the no-executables hack, and also of the nonstandard CXX
hack and the multilibbed CC and CXX hack. Change prerequisite
to autoconf 2.59.
* configure: Rebuild with autoconf 2.59. (Woo-hoo!)
* Makefile.in, gcj/Makefile.in, include/Makefile.in,
testsuite/Makefile.in: Regenerate.