Revision history for Perl extension OpenCL.

TODO: http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithBinary.html
TODO: http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clUnloadCompiler.html # use 1.2 api?
TODO: http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateKernelsInProgram.html
TODO: http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetEventCallback.html, *pfn
TODO: CL_IMAGE_FORMAT
TODO: add long example
TODO: ->build on multiple devices
TODO: some convenience methods maybe?

0.91 Sun Dec 11 00:05:02 CET 2011
	- introduce $buffer_obj->sub_buffer_region method and a new class, OpenCL::BufferObj
          for a subbuffer is a buffer without sub_buffer methods!
        - support apple using a different location for opencl headers - untested.
        - be more strict when passing event lists.

0.59 Tue Nov 22 11:44:32 CET 2011
	- provide $program->binaries method.
        - provide $queue->enqueue_read_buffer_rect method.
        - provide $queue->enqueue_write_buffer_rect method.
	- coalesce like-typed accessor methods into the same xs function and
          multiple ALIASes - this reduces the OpenCL codesize from 162kb to
          132kb on my system.
        - minor doc improvements.

0.55 Sun Nov 20 11:19:25 CET 2011
	- semi-automatically generate query methods for almost all clGet*Info names.
	- provide cl_ext.h constants.
        - provide OpenCL::Image->image_info method.
        - provide OpenCL::Event->profiling_info method.
        - provide OpenCL::Kernel->work_group_info method.

0.15 Thu Nov 17 07:22:11 CET 2011
	- include slice_pitch in enqueue_write_image (can be 0).
        - check length in enqueue_write_image.
        - properly calculate size in enqueue_read_image.
        - likewise, include row_pitch and slice_pitch in image2d and image3d,
          which must be nonzero right now, too, sorry.
        - allow undef or missing data scalar for image2d and image3d.
	- fix enqueue_copy_image prototype.
        - fix formatting.

0.14 Thu Nov 17 04:04:23 CET 2011
	- major incompatibilities due to API cleanup, the API should now be
          mostly stable, if incomplete.
	- fix prerequisites.
	- replaced all _simple functions by "full" implementations, with some
          parameters marked for future expansion - that means their API
          should be stable from now on:
             OpenCL::context_from_type_simple    => OpenCL::context_from_type
             $platform->context_from_type_simple => $platform->context_from_type
             $dev->context_simple                => $platform->context
             $ctx->command_queue_simple became   => $ctx->queue
        - add OpenCL::context function.
        - officially require C99.
        - errno value is unspecified after a successful call.

0.03  Wed Nov 16 01:44:26 CET 2011
	- add some reference documentation for all functions.
        - add user event support.
        - implement event wait lists.

0.02  Tue Nov 15 22:15:47 CET 2011
	- first opencl kernel executed, some example code.

0.01  Tue Nov 15 05:59:00 CET 2011
	- cloned from Convert::Scalar.