unit: renamed to ez_test.
math: renamed to ez_math.
str: renamed to ez_str.
flic.h: renamed to ez.h.
Add missing io.h.
vt102: remove the pragma crap, this file is included by log.h, therefore must be public.
io: fix warning.
io: rename file functions for a better consistency.
tests: renaming for libez.
test-io: write the NULL-terminating character to file.