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

This file is target-specific in SoftFloat, but this is my attempt
at making a completely generic one. Modified from libc/arch/sh3/softfloat.
o <inttypes.h> conversion
o <endian.h> conversion

This file is target-specific in SoftFloat, but this is my attempt
at making a completely generic one. Modified from libc/arch/sh3/softfloat.
o <inttypes.h> conversion
o <endian.h> conversion
o merge of BITS32 and BITS64 ABI, C89 inline, rcsid, derivative work
_ notice.

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