textproc/docbook-500

Consolidate the docbook ports into -sgml and -xml variants.

Submitted by:	hrs (based on)
Sponsored by:	Absolight

Fix docbook-500, the files were one level too deep.

Pointy hat to:	mat
Sponsored by:	Absolight

Refactor the docbook ports.

Reviewed by:	miwi
Sponsored by:	Absolight

Support staging.

Sponsored by:	Absolight

- Stage support

- fix pkgname collisions

Submitted by:	jgh@
Approved by:	gabor@ (maintainer)

Add NO_STAGE all over the place in preparation for the staging support (cat: textproc)

Convert textproc to new options framework

-remove MD5

- Fix two grep patterns that were incorrect but accidentally worked in this   particular case - No PORTREVISION bump, existing installations are consistent

- Add option to install XML character entities - Ignore error if catalog is already registered - Cleanup and consistency with similar ports - Bump PORTREVISION

DocBook is a general purpose XML schema particularly well suited to books and papers about computer hardware and software (though it is by no means limited to these applications).

The Version 5.0 release is a complete rewrite of DocBook in RELAX NG.
The intent of this rewrite is to produce a schema that is true to the spirit
of DocBook while simultaneously removing inconsistencies that have arisen as
a natural consequence of DocBook's long, slow evolution. The Technical
Committee has taken this opportunity to simplify a number of content models
and tighten constraints where RELAX NG makes that possible.

The Technical Committee provides the DocBook 5.0 schema in other schema
languages, including W3C XML Schema and an XML DTD, but the RELAX NG Schema
is now the normative schema.

WWW: http://www.docbook.org/specs/docbook-5.0-spec-cd-04.html