R-devel switch to reference counting

[mattdowle]

From Luke and Kurt,

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Hi Matt,

We're hopefully just a few weeks away from switching R-devel from
NAMED to reference counting. One of data.table's tests fails under
reference counting because the .Internal(inspect()) output is
different: it shows number of references as REF(n) instead o the NAMED
field value as NAM(n). Can you please look into adjusting your tests?

For now you can build with reference counting using a configure.site
file containing

CFLAGS="-O2 -g -Wall -pedantic -DSWITCH_TO_REFCNT"

Best,
Luke

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Matt:
My debian-gcc check run will soon use -DSWITCH_TO_REFCNT and hence show
the error: so please fix as quickly as possible.
Best
-k

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[jangorecki]

great news, finally!