Added build.xml that allows to remove native code when -Dndk=false is supplied. This is necessary for GoogleTV without NDK support (< 4.2.2).
Added build.xml that allows to remove native code when -Dndk=false is supplied. This is necessary for GoogleTV without NDK support (< 4.2.2).

parthipanramesh/AndEngine,parthipanramesh/AndEngine,parthipanramesh/AndEngine,parthipanramesh/AndEngine