This is the first real checkin of nsFileSpec.*, and the first ever checkin of nsFileStream.h. This provides typesafe file specifications, interconversions, and full Standard Library support for iostreams, based on these specifications. The next step is checking by Bill Law and Steve Lamm for Win and Unix. Then it's open season. git-svn-id: svn://10.0.0.236/trunk@15955 18797224-902f-48f8-a5cc-f745e15eee43