fix "incompatible redefinition" warnings

[cwharris]

replace #include <climits> with #include <cuda/std/climits> to eliminate "incompatible redefinition" warnings.

Also fixes a preprocessor typo.

note: while it's safe to merge this PR prior to rapidsai/jitify#13, both are required to eliminate incompatible redefinition warnings.

[kkraus14]

@gpucibot merge

[codecov]

Codecov Report

Merging #7894 (7876959) into branch-0.19 (7871e7a) will increase coverage by 0.88%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           branch-0.19    #7894      +/-   ##
===============================================
+ Coverage        81.86%   82.74%   +0.88%     
===============================================
  Files              101      103       +2     
  Lines            16884    17701     +817     
===============================================
+ Hits             13822    14647     +825     
+ Misses            3062     3054       -8     

Impacted Files	Coverage Δ
python/cudf/cudf/utils/dtypes.py	83.44% <0.00%> (-6.08%)	⬇️
python/cudf/cudf/core/column/lists.py	87.41% <0.00%> (-3.99%)	⬇️
python/cudf/cudf/core/column/decimal.py	92.92% <0.00%> (-1.95%)	⬇️
python/cudf/cudf/core/groupby/groupby.py	92.41% <0.00%> (-1.04%)	⬇️
python/cudf/cudf/utils/utils.py	85.36% <0.00%> (-0.07%)	⬇️
python/dask_cudf/dask_cudf/backends.py	89.58% <0.00%> (-0.05%)	⬇️
python/cudf/cudf/__init__.py	100.00% <0.00%> (ø)
python/cudf/cudf/io/feather.py	100.00% <0.00%> (ø)
python/cudf/cudf/core/__init__.py	100.00% <0.00%> (ø)
python/cudf/cudf/utils/ioutils.py	78.71% <0.00%> (ø)
... and 48 more

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