[hadrian] Use LLVM for test and validate target

[Stefan Schulze Frielinghaus]

Hi all,

Is it possible to force Hadrian to use the LLVM code generator for the
test and validate targets?  For example, while using the following
commands it seems to me that only the native code generator (if
available) is used:

$ ./hadrian/build -c -j --flavour=quick-llvm test
$ ./hadrian/build -c -j --flavour=validate

Cheers,
Stefan