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.
EXPORTS
Init0 @ 1 NONAME
ChkC0 @ 2 NONAME
BlkI0 @ 3 NONAME
GetGeneration @ 4 NONAME
RBlkI0 @ 5 NONAME
SetCloseLib @ 6 NONAME