No many dependency options.... finally found right one.

Author: Layoric

src/ServiceStackEclipse/.classpath

@@ -3,9 +3,11 @@
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.7"/>
 	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
 	<classpathentry kind="src" path="src"/>
-	<classpathentry kind="lib" path="libs/maven-core-3.0.5.jar"/>
-	<classpathentry kind="lib" path="libs/maven-model-3.0.5.jar"/>
-	<classpathentry kind="lib" path="libs/plexus-utils-2.0.6.jar"/>
-	<classpathentry kind="lib" path="libs/httpclient-4.3.3.jar"/>
+	<classpathentry exported="true" kind="lib" path="libs/httpclient-4.3.3.jar"/>
+	<classpathentry exported="true" kind="lib" path="libs/maven-core-3.0.5.jar"/>
+	<classpathentry exported="true" kind="lib" path="libs/maven-model-3.0.5.jar"/>
+	<classpathentry exported="true" kind="lib" path="libs/plexus-utils-2.0.6.jar"/>
+	<classpathentry exported="true" kind="lib" path="bin" sourcepath="bin"/>
+	<classpathentry kind="lib" path="libs/httpcore-4.3.2.jar"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>

src/ServiceStackEclipse/META-INF/MANIFEST.MF

@@ -11,7 +11,103 @@ Bundle-RequiredExecutionEnvironment: JavaSE-1.7
 Import-Package: org.eclipse.core.runtime,
  org.eclipse.jdt.core
 Bundle-ClassPath: .,
+ libs/httpcore-4.3.2.jar,
  libs/httpclient-4.3.3.jar,
  libs/maven-core-3.0.5.jar,
  libs/maven-model-3.0.5.jar,
- libs/plexus-utils-2.0.6.jar
+ libs/plexus-utils-2.0.6.jar,
+ bin/
+Export-Package: org.apache.http,
+ org.apache.http.annotation,
+ org.apache.http.auth,
+ org.apache.http.auth.params,
+ org.apache.http.client,
+ org.apache.http.client.config,
+ org.apache.http.client.entity,
+ org.apache.http.client.methods,
+ org.apache.http.client.params,
+ org.apache.http.client.protocol,
+ org.apache.http.client.utils,
+ org.apache.http.concurrent,
+ org.apache.http.config,
+ org.apache.http.conn,
+ org.apache.http.conn.params,
+ org.apache.http.conn.routing,
+ org.apache.http.conn.scheme,
+ org.apache.http.conn.socket,
+ org.apache.http.conn.ssl,
+ org.apache.http.conn.util,
+ org.apache.http.cookie,
+ org.apache.http.cookie.params,
+ org.apache.http.entity,
+ org.apache.http.impl,
+ org.apache.http.impl.auth,
+ org.apache.http.impl.client,
+ org.apache.http.impl.conn,
+ org.apache.http.impl.conn.tsccm,
+ org.apache.http.impl.cookie,
+ org.apache.http.impl.entity,
+ org.apache.http.impl.execchain,
+ org.apache.http.impl.io,
+ org.apache.http.impl.pool,
+ org.apache.http.io,
+ org.apache.http.message,
+ org.apache.http.params,
+ org.apache.http.pool,
+ org.apache.http.protocol,
+ org.apache.http.util,
+ org.apache.maven,
+ org.apache.maven.artifact,
+ org.apache.maven.artifact.factory,
+ org.apache.maven.artifact.handler,
+ org.apache.maven.artifact.handler.manager,
+ org.apache.maven.artifact.metadata,
+ org.apache.maven.artifact.repository,
+ org.apache.maven.artifact.repository.layout,
+ org.apache.maven.artifact.repository.metadata,
+ org.apache.maven.artifact.repository.metadata.io,
+ org.apache.maven.artifact.resolver,
+ org.apache.maven.artifact.resolver.filter,
+ org.apache.maven.classrealm,
+ org.apache.maven.configuration,
+ org.apache.maven.configuration.internal,
+ org.apache.maven.eventspy,
+ org.apache.maven.eventspy.internal,
+ org.apache.maven.exception,
+ org.apache.maven.execution,
+ org.apache.maven.lifecycle,
+ org.apache.maven.lifecycle.internal,
+ org.apache.maven.lifecycle.mapping,
+ org.apache.maven.model,
+ org.apache.maven.model.io.xpp3,
+ org.apache.maven.model.merge,
+ org.apache.maven.model.plugin,
+ org.apache.maven.monitor.event,
+ org.apache.maven.plugin,
+ org.apache.maven.plugin.internal,
+ org.apache.maven.plugin.prefix,
+ org.apache.maven.plugin.prefix.internal,
+ org.apache.maven.plugin.version,
+ org.apache.maven.plugin.version.internal,
+ org.apache.maven.project,
+ org.apache.maven.project.artifact,
+ org.apache.maven.project.path,
+ org.apache.maven.properties.internal,
+ org.apache.maven.repository,
+ org.apache.maven.repository.legacy.metadata,
+ org.apache.maven.rtinfo,
+ org.apache.maven.rtinfo.internal,
+ org.apache.maven.settings,
+ org.apache.maven.toolchain,
+ org.apache.maven.toolchain.java,
+ org.apache.maven.toolchain.model,
+ org.apache.maven.toolchain.model.io.xpp3,
+ org.codehaus.plexus.util,
+ org.codehaus.plexus.util.cli,
+ org.codehaus.plexus.util.cli.shell,
+ org.codehaus.plexus.util.dag,
+ org.codehaus.plexus.util.introspection,
+ org.codehaus.plexus.util.io,
+ org.codehaus.plexus.util.reflection,
+ org.codehaus.plexus.util.xml,
+ org.codehaus.plexus.util.xml.pull

src/ServiceStackEclipse/build.properties

@@ -6,4 +6,11 @@ bin.includes = plugin.xml,\
                libs/httpclient-4.3.3.jar,\
                libs/maven-core-3.0.5.jar,\
                libs/maven-model-3.0.5.jar,\
-               libs/plexus-utils-2.0.6.jar
+               libs/plexus-utils-2.0.6.jar,\
+               bin/,\
+               libs/httpcore-4.3.2.jar
+jars.extra.classpath = libs/httpclient-4.3.3.jar,\
+                       libs/maven-core-3.0.5.jar,\
+                       libs/maven-model-3.0.5.jar,\
+                       libs/plexus-utils-2.0.6.jar,\
+                       libs/httpcore-4.3.2.jar