Hi,

This patch implements initial GDB support for the OpenCL C Programming 
Language. Since OpenCL is based on C99 I tried to reuse GDBs C infrastructure 
where possible (expression parser, printing routines, etc). The patch 
basically adds "opencl" to the list of known source level languages. The 
built-in scalar and vector data types specified by OpenCL including the 3-
component vectors defined by version 1.1 as well as the half- and double-
precision floating point data types of the cl_khr_fp16 and cl_khr_fp64 OpenCL 
extensions are implemented. The operators specified by section 6.3 are 
covered. Vector component access as specified by section 6.1.7 of OpenCL 
including the access as lvalue (where possible) is also part of this patch. 
The GDB testsuite has been enhanced to detect OpenCL support and testcases 
have been added to test the features mentioned above. This patch is meant to 
be applied on top of these patches:
  http://sourceware.org/ml/gdb-patches/2010-10/msg00289.html
  http://sourceware.org/ml/gdb-patches/2010-10/msg00031.html
  http://sourceware.org/ml/gdb-patches/2010-10/msg00297.html

Any comments are appreciated.

Regards
Ken Werner