Autotools updates

Few autotools updates and de-duplication of the README file.
NOTE: not sure about the readme file if that works on windows this way.

Please remember to run "make distcheck" call to test and then release the source tarballs from the tag :)
On 10 June 2014 09:31, Tomáš Chvátal <notifications@github.com> wrote:

> In configure.ac:
>
> >  	AS_IF([test -z "$DOCBOOK2MAN"], [
> > -		AC_PATH_PROG(DOCBOOK2MAN,[docbook2x-man])
> > +		AC_PATH_PROG(DOCBOOK2MAN,[docbook-to-man])
>
> Yeah it is distro by distro. Some really call docbook2x as docbook-to-man.
>
> $ rpm -ql docbook2x |grep bin
> /usr/bin/db2x_manxml
> /usr/bin/db2x_texixml
> /usr/bin/db2x_xsltproc
> /usr/bin/docbook-to-man
> /usr/bin/docbook-to-texi
> /usr/bin/sgml2xml-isoent
> /usr/bin/utf8trans
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/SupSuper/OpenXcom/pull/853/files#r13582517>.
>
It appears that docbook2man is the upstream name. [1][2] I would suggest
using that by default, and letting distributions that deviate from upstream
fix it themselves.

Cheers,


WorMzy

[1] http://docbook2x.sourceforge.net/latest/doc/docbook2X.html
[2] http://docbook2x.sourceforge.net/latest/doc/docbook2man.html