* Added a check for the device and platform id numbers.

* Hyphens.
* svn:ignore properties for fortrancl.

fully implemented in Fortran, and we have a usable and independent
Fortran OpenCL interface.

* Fixed a possible segfault in messages_fatal.

* Interfaces for the kernel CL routines.

* Removed N. Suberviola from the copyright. With my last changes, all
his code has been removed.

* Added a missing error code.

* Renamed some constants.

* Reimplemented f90_cl_has_extension in Fortran.

OpenCL independent of Octopus specific code.

* Completed the implementation of flGetDeviceInfo.
* Added a integer(8) version of messages_write.

* Now f90_cl_device_get_info receives an device object.

* Fixed several compiler warnings.

* Device name are printed from Fortran instead of C.

with MPI. This will work for one node with several devices and one MPI
process per device.

* Now messages_info has the all_nodes optional argument.

* It seems that AMD OpenCL has problems compiling just before execution.

fortcom: Error: ../../../src/basic/cl_kernel.F90, line 140: The dummy argument of a derived type containing a pointer component has the INTENT(IN) attribute therefore it shall not appear as the expr of an assignment-stmt in a PURE procedure.   [THIS]
    ref = this%kernel
----------^

and this warning

fortcom: Warning: ../../../src/basic/opencl.F90, line 411: The return value of this FUNCTION has not been defined.   [WORKGROUP_SIZE]
    integer function opencl_kernel_workgroup_size(kernel) result(workgroup_size)
-----------------------------------------------------------------^

* Made filename agree with module name for opt_control_iter.

in the place of the code where they are used and are compiled the
first time they are called.

* Fixed a bug in the calculation of the OpenCL complex dot product.