update to OpenCL 1.1 header

update to OpenCL 1.1 header

Based on our current progress, we plan to implement OpenCL 1.1 rather
than OpenCL 1.2 for the next release. Thus we downgrade the header file
to 1.1 in this commit.

put OpenCL 1.1 header in include/CL/

add OpenCL 1.2 defs, used by some code, by
 "#ifndef CL_VERSION_1.2"
 " some OpenCL 1.2 defs"
 "#endif"

add OCL_CREATE_IMAGE2D, OCL_CREATE_IMAGE3D,
    OCL_CREATE_GL_IMAGE2D, OCL_CREATE_GL_IMAGE3D

update test cases

Signed-off-by: Homer Hsing <homer.xing@intel.com>
Reviewed-by: Zhigang Gong <zhigang.gong@linux.intel.com>