Get rid of the silly OpenCLDevice class that had only static members. We can
as well just use namespacing. Remove functions only used internally in
openclwrapper.cxx from the now public openclwrapper.hxx header.
Change-Id: If7336edd262c772564dc13e64113d72d0b52428c
No cleanups yet. Just removed the "sc" namespace parts now when this stuff is
no longer Calc-specific. There is still horribly confusing use of the same
OpenCLDevice name for both a class and as a namespace, for instance. And the
OpenCLDevice class has only public static members even, so effectively it acts
as just a namespace anyway... Etc.
Change-Id: Idc5f30a721df0101426c676f04a85e02c5dc8443
