Method setExplicit

src/main/java/com/aparapi/Kernel.java:3250–3252

For dev purposes (we should remove this for production) allow us to define that this Kernel uses explicit memory management @param _explicit (true if we want explicit memory management)

(boolean _explicit)

    * @param _explicit (true if we want explicit memory management)
    */
   public void setExplicit(boolean _explicit) {
      prepareKernelRunner().setExplicit(_explicit);
   }

   /**
    * For dev purposes (we should remove this for production) determine whether this Kernel uses explicit memory management