Updated Openjdk definition to take prebuild JDK7 as default version. Removed Openjdk7-amd64 definition which become obsolete.

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>
Pptpd definition should use gmake to build properly.

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>