Support `supertabular` option for latex table output

[yl4070]

Prework

Currently, the latex table output uses longtable package, but the package is incompatible with two column layouts, which are quite commonly used, such as IEEE template.

Proposal

This can be rather simply remedied by optionally supporting supertabular package. Required modifications in output latex code often quite minimal besides changing from longtable to supertabular.

[kendonB]

I think this is better solved by addressing #1549