* configure.ac (SET_SRCURI): Provide source root to manual.
(--with-srcuri): Add configure option.
* doc/config.texi.in (SET_SRCURI): Add configuration value.
* doc/liza.texi: Add warning if SET_SRCURI is unset when DEVNOTES is set.
Texinfo is the documenation format of the GNU operating system and can
produce output in a variety of useful formats, including info, HTML, and
PDF.
The HTML output is of particular importance here, since Liza is a JavaScript
framework.