texinfo translations reenabled



Robert Dodier writes:
> Following earlier discussion I've reenabled the Makefiles for
> doc/info/es and doc/info/pt .
> I've committed texi2html 1.76 to Maxima cvs as we discussed.
> doc/info/Makefile.am and doc/info/{es,pt}/Makefile.am all use
> the private texi2html 1.76 now.
> 
> doc/info/{es,pt}/Makefile.am has infodir = @prefix@/info/{es,pt}
> so maxima.info* files in {es,pt} are copied to a subdirectory of
> @prefix@/info .

Thank you!  I've introduced two configuration options
--enable-lang-es
--enable-lang-pt
for conditional processing of Spanish and Portuguese
documentation.  By default both options are false
and only English is installed.

Corresponding changes to describe, maxima.spec and Windows Maxima
installer will follow a bit later.

> With these changes, make and make install succeed,
> and the generated html and info files are good.
> In particular accents and other diacriticals are processed correctly.

There is one problem with texi2html script. It explicitly
requires #!/usr/local/bin/perl while on many systems it is
/usr/bin/perl.  Make texi2html header configurable?


-- 
      Vadim V. Zhytnikov