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
_Z17VariantInitialisev @ 1 NONAME
_ZN7Variant10PowerResetEv @ 2 NONAME
_ZN7Variant14BaseLinAddressEv @ 3 NONAME
_ZN7Variant16MarkDebugPortOffEv @ 4 NONAME
_ZN7Variant8SwitchesEv @ 5 NONAME
_ZN7Variant8UartInitEv @ 6 NONAME