pagure.io/xmlto

[and-ri]

closed #340

[what-the-diff]

PR Summary

• New file added
  A new file has been introduced to the project.
• Updated distributable URL and version
  The URL of the distributable and its corresponding version have been updated.
• Added dependencies
  New dependencies for docbook, util-linux, and libxslt (for Darwin) have been added.
• Improved build script
  The build script now configures with ARGS before running 'make install'. An environment variable ARGS has been added to pass arguments into the ./configure command line tool.
• Two new binaries provided
  After installation, the 'bin' directory will contain two new binaries: 'xmlif' and 'xmlto'.