Brings file names into alignment with current naming conventions,
and relocates them to the main microkernel directory.
Note: Since the microkernel/channel directory is now empty, the
build system no longer attempts to build its contents.
Change-Id: I936c7cdf2e08f675dd66a87cacf3b4fa5a7a6441
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>