Export all packages of o.e.j.ant and o.e.j.archive bundles

Follow best practice in Eclipse OSGi based projects to export all
packages to foster reuse and experimentation.

Change-Id: I27f2810fbf0439fcb7c907e7b4d570a9613f8aa6
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit.ant/META-INF/MANIFEST.MF

@@ -9,5 +9,7 @@ Import-Package: org.apache.tools.ant,
   org.eclipse.jgit.storage.file;version="[5.4.1,5.5.0)"
 Bundle-Localization: plugin
 Bundle-Vendor: %Provider-Name
-Export-Package: org.eclipse.jgit.ant.tasks;version="5.4.1";
- uses:="org.apache.tools.ant.types,org.apache.tools.ant"
+Export-Package: org.eclipse.jgit.ant;version="5.4.1",
+ org.eclipse.jgit.ant.tasks;version="5.4.1";
+  uses:="org.apache.tools.ant,
+   org.apache.tools.ant.types"

org.eclipse.jgit.archive/META-INF/MANIFEST.MF

@@ -25,4 +25,5 @@ Export-Package: org.eclipse.jgit.archive;version="5.4.1";
   uses:="org.eclipse.jgit.lib,
    org.eclipse.jgit.api,
    org.apache.commons.compress.archivers,
-   org.osgi.framework"
+   org.osgi.framework",
+ org.eclipse.jgit.archive.internal;version="5.4.1";x-internal:=true