[datatable-help] v1.7.4 submitted to CRAN

[Matthew Dowle]

BUG FIXES

o  v1.7.3 failed CRAN checks (and could crash) in R pre-2.14.0.
   Over-allocation in v1.7.3 uses truelength which is initialized
   to 0 by R 2.14.0, but not initialized pre-2.14.0. This was
   known and coded for but only tested in 2.14.0 before previous
   release to CRAN.

NOTES

o  Two unused C variables removed to pass warning from one CRAN
   check machine (r-devel-fedora). -Wno-unused removed from
   Makevars to catch this in future before submitting to CRAN.