xindy: contrib directory must be searched first.

Otherwise users or TL cannot add local updates easily.
Add rules to create man page.
New: input markup xelatex.
Update man pages.
Support LaTeX version 2014/05/01.

Undefined slots in inputenc now generate lines like
  \indexentry{\@inpenc@undefined@ {latin3}--80}{1}.
This was detected by Heiko Oberdiek, we use his suggested change.