Remove clause 3 and 4 from TNF licenses

put TNF 4-clause license.
authors - if you are okay with more relaxed license terms, or the regression
test code was derived from others, pls change them.

redo <inttypes.h> conversion

TestFloat-2a contained a bunch of code obviously intended to work
around rand(3) bugs. Replace it all with this random(3) conversion.

Original post-\r-rip include files for TestFloat-2a