This allows the use of the <code> element instead of <literal>, and several
other enhancements.
The formatting specification in default.dsl is necessary because DSSSL does
not recognize the <code> element and therefore formats it in red by
default.
the appropriate tool via USE_TOOLS (usually "gs:run"), and remove
ghostscript.mk. This change removes a rather out-dated file from
pkgsrc and switches packages to use the more compact implementation
of the Ghostcript-handling inside the tools framework.
dependencies on the tools used to build doc/guide. doc/guide still uses
BUILD_DEPENDS on the tools (so that it's still possible to build for
certain output types with minimal dependencies); it does not depend on
the meta-pkg.
