Export java home before using ant to build native part of launchers.

mvn-rpmbuild does it automatically, but in this case we are
workarounding an issue with cbi that launchers are built to late and are
not included into final product.

eclipse.spec

@@ -69,7 +69,7 @@ fi;
 Summary:        An open, extensible IDE
 Name:           eclipse
 Version:        %{eclipse_version}
-Release:        13%{?dist}
+Release:        14%{?dist}
 License:        EPL
 Group:          Development/Tools
 URL:            http://www.eclipse.org/
@@ -638,6 +638,7 @@ mvn-rpmbuild -f maven-cbi-plugin/pom.xml \
 
 # workaround for https://bugs.eclipse.org/bugs/show_bug.cgi?id=386377
 pushd rt.equinox.framework/bundles/org.eclipse.equinox.executable/library/gtk/
+    export JAVA_HOME=%{java_home}
     ant build_eclipse_cbi
 popd 
 
@@ -1355,6 +1356,9 @@ rm -rf %{_bindir}/efj/
 %{_mavendepmapfragdir}/%{name}-equinox-osgi
 
 %changelog
+* Tue Nov 6 2012 Krzysztof Daniel <kdaniel@redhat.com> 1:4.2.1-14
+- Export missing java home.
+
 * Mon Nov 5 2012 Krzysztof Daniel <kdaniel@redhat.com> 1:4.2.1-13
 - Reduce the memory available for Tycho build.
 - Reduce the build time.