Implement procedure tracing
 * Procedure tracing in librcl
 * Added more error checks in librcl public interface

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>
Make clCreateBuffer honour host_ptr argument

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>
Add incomplete implementation of missing clRelease*() functions

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>
Add stub implementation for several clGet*Info functions

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>
Implement GET_INFO RCL message

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>