Added clang-format config files for C++ sub-projects. Top level .clang-format changed to GNU style (for C projects).

--HG--
rename : .clang-format => examples/tplay/.clang-format
Added CommentPragmas: "^ TIZ_CLASS_COMMENT:" to top-level .clang-format file.
Experimental: reformatted tizkernel class using the top-level .clang-format file.
Reformatted tizscheduler using the top-level .clang-format file.
DONE reformatted tizkernel files using the new top-level .clang-format file.
Reformatted tizprc using clang-format.