top: tweak newlib interface, as more experience gained

top: tweak newlib interface, as more experience gained

Now that the dust is settling following an initial API
library effort, it is apparent my naming standards may
not have always been observed. This was a minor crime,
since those standards are unwritten (& not apparent?).

Basically, top has always capitalized the first letter
of global variables in an effort to distinguish global
definitions from local variables later in the program.

So this patch alters the new API variables to conform,
while also explicitly using 'context' for key structs.

Lastly, top now employs the new '#include <proc/name>'
conventions for the new/converted module header files.

Signed-off-by: Jim Warner <james.warner@comcast.net>