[master branch] EJBCLIENT-76 Add support for compressing payload during EJB invocations

Related JIRA: https://issues.jboss.org/browse/EJBCLIENT-76

The commits here add support for letting users mark certain methods for data compression during EJB invocations. 

- Users are expected to use the @org.jboss.ejb.client.annotation.CompressionHint to specify the need for compression. 
- That annotation can be specified at both class and method levels. Specifying it on class level will make each method eligible for data compression. 
- Specifying the annotation on method level will override the corresponding class level annotation (if any).
- This annotation is applicable only for remote business interface view(s) of EJBs.

A typical usage would look like:

    import org.jboss.ejb.client.annotation.CompressionHint;

    @CompressionHint
    public interface MethodOverrideDataCompressionRemoteView {

        @CompressionHint(compressRequest = false)
        String echoWithResponseCompress(final String msg);

        @CompressionHint(compressResponse = false)
        String echoWithRequestCompress(final String msg);

        String echoWithNoExplicitDataCompressionHintOnMethod(String msg);
    }