Log Message:
Update tex-cite{,-doc} to 5.3.

Changes:
- \CitationPrefix with [gather], drop 2.09
- Handle sort/compress of compound citation numbers (number by
  chapter) such as 3.18 or 5-3.  Note that these compounds cannot have
  prefix or suffix letters (not enough bits in the maximum TeX
  number).
- Use \hfill and \texttt; update email.