Fix find-package-test failure with non-default compiler
Fix find-package-test failure with non-default compiler

The failure would happen when the main project was configured with
a compiler which is not the system default. The new configuration
was not forwarded to "ctest --build-and-test". This fixes it.

alabuzhev/fmt,lightslife/cppformat,cppformat/cppformat,alabuzhev/fmt,mojoBrendan/fmt,alabuzhev/fmt,mojoBrendan/fmt,cppformat/cppformat,mojoBrendan/fmt,lightslife/cppformat,cppformat/cppformat,lightslife/cppformat