Added sf\3tshell platform with support for building beagle textshell+fshell ROMs. As part of that: * Added baserom command and tweaked it to be more friendly with SF baselines. * Lots of build fixes Also cd now makes sure the current working directory matches the file system with respect to case.

EXPORTS
	_Z19CreateLogicalDevicev @ 1 NONAME
	KIsrBufSize @ 2 NONAME
	KChunkSize @ 3 NONAME
	_ZN18CloggerDebugRouter16DebugPortChangedEv @ 4 NONAME
	_ZN18CloggerDebugRouter21SetCrashDumpFunctionsEPFvPvjRNS_14SCrashDumpAreaEEPFvS2_E @ 5 NONAME
	KEnableEarlyRdebug @ 6 ABSENT