altos/lambdakey-v1.0: Add back and/or macros
authorKeith Packard <keithp@keithp.com>
Tue, 19 Dec 2017 21:09:24 +0000 (13:09 -0800)
committerKeith Packard <keithp@keithp.com>
Tue, 19 Dec 2017 21:09:24 +0000 (13:09 -0800)
With scheme shrinking a bit, there's now space for these useful macros.

Signed-off-by: Keith Packard <keithp@keithp.com>

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