Adjusted EPOCROOT handling so that in the context of Raptor invocation,
it also updates the environment variable so that other modules (such as
e32variant.pm) can also work without changes.
# component name "File Server Tests"
component base_f32test
source \sf\os\kernelhwsrv\kerneltest\f32test
binary \sf\os\kernelhwsrv\kerneltest\f32test\group all
exports \sf\os\kernelhwsrv\kerneltest\f32test\group
notes_source \component_defs\release.src
ipr T