export package with the AllTests class

tests/org.eclipse.dltk.ruby.debug.tests/META-INF/MANIFEST.MF

diff --git a/tests/org.eclipse.dltk.ruby.debug.tests/META-INF/MANIFEST.MF b/tests/org.eclipse.dltk.ruby.debug.tests/META-INF/MANIFEST.MF
index f214a6d..dfd42d3 100644
--- a/tests/org.eclipse.dltk.ruby.debug.tests/META-INF/MANIFEST.MF
+++ b/tests/org.eclipse.dltk.ruby.debug.tests/META-INF/MANIFEST.MF
@@ -17,3 +17,4 @@
  org.eclipse.dltk.ruby.launching,
  org.eclipse.dltk.launching
 Eclipse-LazyStart: true
+Export-Package: org.eclipse.dltk.ruby.debug.tests