Add value internalisation and --in-place-lowering to test runner.
Add value internalisation and --in-place-lowering to test runner.

CulpaBS/wbBach,HIPERFIT/futhark,HIPERFIT/futhark,HIPERFIT/futhark,diku-dk/futhark,ihc/futhark,mrakgr/futhark,diku-dk/futhark,mrakgr/futhark,mrakgr/futhark,ihc/futhark,diku-dk/futhark,ihc/futhark,diku-dk/futhark,diku-dk/futhark