[GiNaC-devel] More rules to mul::info()

[Alexei Sheplyakov]

Hello,

> Subject: [PATCH 2/2] Elaborate mul::info(). Add to mul::info() rules that a)
>  a product of two negative entries is positive; b) a
>  product of a positive and non-negative entries is
>  non-negative.

I've merged this one (with a slightly different commit message).

Best regards,
	Alexei