nvcc_wrapper can't handle -Xcompiler -o out.o

[jlippuner]

When using CMake 3.16 and 3.17 I've run into some issues where CMake sends -Xcompiler -o out.o over to nvcc_wrapper. The wrapper consumes -Xcompiler and adds -o to its list of flags to be passed via -Xcompiler, but it doesn't consume out.o, which then gets interpreted as a linked object and gets an -Xlinker stuck in front of it. So nvcc_wrapper will pass the following to nvcc: -Xcompiler -x,c++,-fopenmp,-o -Xlinker out.o and that results in different problems on the different platforms, but for both platforms the fix is to not consume the -o flag as part of consuming -Xcompiler.