Driver: correct profiling symbol preservation on Windows
The Windows linker does not support `-u`. Furthermore, the compiler
driver does not forward the `-u` option to the linker. We correctly use
the `/include:` option from the linker. This should ensure that the
symbol is preserved even with `/opt:ref`. This spelling should be
compatible with both lld and link, which should provide sufficient
portability.
Take the opportunity to make it more obvious that the two parameters are
creating a pair that will be concatenated by using a braced initializer.
See
https://docs.microsoft.com/en-us/cpp/build/reference/include-force-symbol-references?view=msvc-160
for more details on the option.
