mrg 110ac605f8 introduce DDB_END_CMD and replace more than 20 copies of the same ...

list of NULLs and 0.  idea from rillig@.

all touched ports built, several booted.

2021-02-23 07:13:51 +00:00

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bi

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boot

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compile

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conf

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consolerl

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floppy

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if

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include

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mba

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stand

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uba

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vax

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vsa

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Makefile

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