Fix native registration for exports with name attribute (fixes #702)

[jjallaire]

No description provided.

[codecov-io]

Codecov Report

Merging #703 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #703   +/-   ##
=======================================
  Coverage   89.54%   89.54%           
=======================================
  Files          66       66           
  Lines        3587     3587           
=======================================
  Hits         3212     3212           
  Misses        375      375

Impacted Files	Coverage Δ
src/attributes.cpp	98.4% <ø> (ø)	⬆️

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[eddelbuettel]

Thanks for the quick PR. Will merge, and the possibly rearrange ChangeLog to re-establish chronological order...