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‘configure’ checks if the compiler specified by ‘CXX’ ‘CXXFLAGS’ is able to compile C++ code.
‘table()’ no longer drops an ‘"NaN"’ factor level, and better obeys ‘exclude = <chr>’, thanks to Suharto Anggono's patch for PR#16936. Also, in the case of ‘exclude=NULL’ and ‘NA’s, these are tabulated correctly (again).
‘configure’ works better with Oracle Developer Studio 12.5.