[Maxima] -inf vs. minf, tex(), web interface updates

[Barton Willis]

-----Matthew Sarnoff wrote: -----

>- signum(x) needs to be translated as "\sgn x"

(%i1) load("mactex-utilities")$
(%i2) texput(signum,"\\sgn")$
(%i3) tex(signum(x));
$$\sgn\left(x\right)$$

Barton