gnu: Add java-eclipse-core-contenttype.

* gnu/packages/java.scm (java-eclipse-core-contenttype): New variable.

gnu: Add java-eclipse-equinox-preferences.

* gnu/packages/java.scm (java-eclipse-equinox-preferences): New variable.

gnu: Add java-eclipse-equinox-app.

* gnu/packages/java.scm (java-eclipse-equinox-app): New variable.

gnu: Add java-eclipse-equinox-registry.

* gnu/packages/java.scm (java-eclipse-equinox-registry): New variable.

gnu: Add java-eclipse-core-jobs.

* gnu/packages/java.scm (java-eclipse-core-jobs): New variable.

gnu: Add java-osgi-service-event.

* gnu/packages/java.scm (java-osgi-service-event): New variable.

gnu: Add java-eclipse-equinox-common.

* gnu/packages/java.scm (java-eclipse-equinox-common): New variable.

gnu: Add java-eclipse-osgi.

* gnu/packages/java.scm (java-eclipse-osgi): New variable.

gnu: Add java-osgi-core.

* gnu/packages/java.scm (java-osgi-core): New variable.

gnu: Add java-osgi-annotation.

* gnu/packages/java.scm (java-osgi-annotation): New variable.

gnu: Add java-commons-net.

* gnu/packages/java.scm (java-commons-net): New variable.

gnu: Add java-asm.

* gnu/packages/java.scm (java-asm): New variable.

gnu: Add java-commons-compress.

* gnu/packages/java.scm (java-commons-compress): New variable.

gnu: Add java-jsch.

* gnu/packages/java.scm (java-jsch): New variable.

gnu: Add java-commons-net.

* gnu/packages/java.scm (java-commons-net): New variable.

gnu: Add java-httpcomponents-httpmime.

* gnu/packages/java.scm (java-httpcomponents-httpmime): New variable.

gnu: Add java-httpcomponents-httpclient.

* gnu/packages/java.scm (java-httpcomponents-httpclient): New variable.

gnu: Add java-httpcomponents-httpcore-ab.

* gnu/packages/java.scm (java-httpcomponents-httpcore-ab): New variable.

gnu: Add java-httpcomponents-httpcore-nio.

* gnu/packages/java.scm (java-httpcomponents-httpcore-nio): New variable.

gnu: Add java-httpcomponents-httpcore.

* gnu/packages/java.scm (java-httpcomponents-httpcore): New variable.