* Requires CLN 1.1 now. Class numeric doesn't use an indirect pointer to the
actual representation any more. This is a speedup.
* mul::expand() was reengineered to not allocate temporary excess memory.
* Non-integer powers of a symbol are treated as constants by (l)degree() and
* Requires CLN 1.1 now. Class numeric doesn't use an indirect pointer to the
actual representation any more. This is a speedup.
* mul::expand() was reengineered to not allocate temporary excess memory.
* Non-integer powers of a symbol are treated as constants by (l)degree() and