2013-04-26  Marcelo Morais  <m.morais@samsung.com>

        Fixed setArg for square kernel in Hello example

        Reviewed by Antonio Gomes.

        According to the spec, if the value used in setArg is a
        number, the type should be explicitly informed (it is FLOAT
        by default). In our case, we are using an unsigned int value
        in 'square' kernel.

        If we use LONG it doesn't work fine on Linux/EFL, for example,
        with a NVIDIA graphic card and OpenCL 1.1

        * WebCL/Hello/index.html: