RISCI_ATOM/ken-cc: Ken C Compiler from Plan9. @ upstream

Charles Forsyth 720a29d1a9 remove various Nt exe not part of compiler suite		10 anni fa
..
cp.exe	c4019156ec Initial import of fairly old source	10 anni fa
echo.exe	c4019156ec Initial import of fairly old source	10 anni fa
gzip.exe	c4019156ec Initial import of fairly old source	10 anni fa
mk.exe	c4019156ec Initial import of fairly old source	10 anni fa
mkdir.exe	c4019156ec Initial import of fairly old source	10 anni fa
mv.exe	c4019156ec Initial import of fairly old source	10 anni fa
rcsh.exe	c4019156ec Initial import of fairly old source	10 anni fa
rm.exe	c4019156ec Initial import of fairly old source	10 anni fa
sed.exe	c4019156ec Initial import of fairly old source	10 anni fa
test.exe	c4019156ec Initial import of fairly old source	10 anni fa
tr.exe	c4019156ec Initial import of fairly old source	10 anni fa
yacc.exe	c4019156ec Initial import of fairly old source	10 anni fa