gnu: Export non-trivial packages that were private.

This makes those packages visible to ‘fold-packages’, which in turns gives a
clearer view of the package set to tools like (gnu ci) and ‘guix graph’.

* gnu/packages/dlang.scm (ldc-bootstrap): Export and add ‘hidden?’ property.
(ldc)[properties]: New field.
(dmd-bootstrap): Export and add ‘hidden?’ property.
(dmd)[properties]: New field.
* gnu/packages/freedesktop.scm (xdgmime): Export and add ‘hidden?’ property.
* gnu/packages/games.scm (glkterm, supertuxkart-data)
(ring-racers-data, openttd-engine, openttd-opengfx, openttd-opensfx)
(openttd-openmsx, openrct2-title-sequences, openrct2-objects)
(xonotic-data): Export and add ‘hidden?’ property.
(simgear): Export.
* gnu/packages/gnucash.scm (gnucash-docs): Export and add ‘hidden? property.
* gnu/packages/groovy.scm (java-groovy-bootstrap): Export and add ‘hidden?’
property.
(groovy-bootstrap, groovy-tests-bootstrap, groovy-parser-antlr4)
(groovy-test, groovy-xml, groovy-templates, groovy-groovydoc)
(groovy-ant, groovy-astbuilder, groovy-bsf, groovy-cli-commons)
(groovy-cli-picocli, groovy-swing, groovy-console, groovy-datetime)
(groovy-dateutil, groovy-docgenerator, groovy-groovysh, groovy-jmx)
(groovy-json, groovy-jsr223, groovy-nio, groovy-servlet)
(groovy-sql, groovy-testng, groovy-macro, groovy-yaml): Export.
(groovy)[properties]: New field.
* gnu/packages/haskell-xyz.scm (ghc-chell-quickcheck-bootstrap)
(ghc-options-bootstrap): Export and add ‘hidden?’ property.
(ghc-system-fileio-bootstrap, ghc-system-filepath-bootstrap): Remove.
* gnu/packages/haskell.scm (ghc-alex-bootstrap-for-9.4)
(ghc-happy-bootstrap-for-9.4): Export.
* gnu/packages/image-processing.scm (insight-toolkit-legacy): Export.
* gnu/packages/java-bootstrap.scm (jikes): Export.
(classpath-bootstrap): Export and add ‘hidden?’ property.
(jamvm-1-bootstrap, ant-bootstrap, ecj-bootstrap): Likewise.
(ecj-javac-wrapper, classpath-0.99, classpath-jamvm-wrappers): Export.
(classpath-devel): Export and remove ‘hidden?’ property.
(jamvm): Export.
(ecj-javac-wrapper-final): Export and remove ‘hidden?’ property.
(ecj4-bootstrap): Export and add ‘hidden?’ property.
(ecj4-javac-wrapper): Export.
(jamvm-with-ecj4): Export and remove ‘hidden?’ property.
* gnu/packages/java-xml.scm (java-jaxen-bootstrap): Export and add ‘hidden?’
property.
(java-jaxen)[properties]: New field.
* gnu/packages/java.scm (java-plexus-container-default-bootstrap): Export and
add ‘hidden?’ property.
(java-plexus-container-default)[properties]: New field.
(java-stringtemplate-4.0.6): Export.
(antlr3-bootstrap): Export and add ‘hidden?’ property.
(antlr3-3.3)[properties]: New field.
(java-tunnelvisionlabs-antlr4-runtime-bootstrap): Export and add ‘hidden?’
property.
(java-tunnelvisionlabs-antlr4-bootstrap): Likewise.
(java-tunnelvisionlabs-antlr4-runtime)[properties]: New field.
(java-tunnelvisionlabs-antlr4)[properties]: New field.
(java-geronimo-genesis-2.1): Export.
* gnu/packages/rails.scm (ruby-ammeter-bootstrap): Export and add ‘hidden?‘
property.
(ruby-ammeter)[properties]: New field.
* gnu/packages/ruby-check.scm (ruby-cucumber-compatibility-kit-bootstrap):
Export and add ‘hidden?’ property.
* gnu/packages/ruby-xyz.scm (ruby-rspec-block-is-expected-bootstrap): Likewise.
(ruby-rubocop-capybara-minimal): Likewise.
(ruby-rubocop-capybara)[property]: New field.
(ruby-rubocop-rake-minimal): Export and add ‘hidden?’ property.
(ruby-rubocop-rake)[properties]: New field.
(ruby-rubocop-rspec-minimal): Export and add ‘hidden?’ property.
(ruby-rubocop-rspec)[properties]: New field.
(ruby-cucumber-without-tests): Export and add ‘hidden?’ property.
(ruby-liquid-c-bootstrap): Likewise.
(ruby-liquid-c)[properties]: New field.
* gnu/packages/xorg.scm (xcffibgen): Export and add ‘hidden?’ property.

Fixes: guix/maintenance#85
Change-Id: I39cc94accb4eefbe73801f1f237201b48e4a7def
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
Merges: #6781

gnu/packages/gnucash.scm

@@ -224,7 +224,7 @@ installed as well as Yelp, the Gnome help browser.")
 
 ;; This package is not public, since we use it to build the "doc" output of
 ;; the gnucash package (see above).  It would be confusing if it were public.
-(define gnucash-docs
+(define-public gnucash-docs
   (let ((revision ""))               ;set to the empty string when no revision
     (package
       (name "gnucash-docs")
@@ -256,6 +256,7 @@ installed as well as Yelp, the Gnome help browser.")
 This package exists because the GnuCash project maintains its documentation in
 an entirely separate package from the actual GnuCash program.  It is intended
 to be read using the GNOME Yelp program.")
+      (properties '((hidden? . #t)))        ;meant to be an input to 'gnucash'
       (license (list license:fdl1.1+ license:gpl3+)))))
 
 (define-public gwenhywfar