More extensive error reporting in sysdef perl tools. Allow sysdef merging with an empty upstream model.
EXPORTS
?NewLC@CInvMessenger@@SAPAV1@AAVCConsoleBase@@ABVTDesC16@@@Z @ 1 NONAME ; class CInvMessenger * CInvMessenger::NewLC(class CConsoleBase &, class TDesC16 const &)
?ShowMessage@CInvMessenger@@QAEXXZ @ 2 NONAME ; void CInvMessenger::ShowMessage(void)