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
_ZN8Debugger12DebuggerInfoEv @ 1 NONAME ; Debugger::DebuggerInfo()
_ZN8Debugger7InstallEP13DDebuggerInfo @ 2 NONAME ; Debugger::Install(DDebuggerInfo*)
_ZN8Debugger7VersionEv @ 3 NONAME ; Debugger::Version()