- Document more some of the fields in the PARTENTRY, DISKETNRY and PARTLIST structures;
- Remove the redundant members "SystemDisk", "OriginalSystemDisk" and "TempDisk" in PARTLIST as these can be consistently deduced from the corresponding (Original)(System)(Temp)Partition members
(note that we however keep "CurrentDisk" alongside "CurrentPartition", see the comment in the code why we do it so).
- Adjust the rest of the code to take the removal of the redundant members into account. The 2nd parameter of GetNextUnformattedPartition() and GetNextUncheckedPartition() is now really optional.
- Introduce a SetPartitionType() helper to simplify the code that sets the partition type, which also automatically adjusts other internal variables of said partition in accordance.
- "Mounted" logical drives can have assigned letters too, registered in \DosDevices\.
svn path=/branches/setup_improvements/; revision=74532
- ConcatPaths that concatenates paths (or a path and a file name);
- OpenAndMapFile (resp. UnMapFile), whose purpose is to open a file and map it in memory (resp. unmap it from memory).
- Add extra optional parameters to DoesPathExist and DoesFileExist: an optional "RootDirectory" handle and, for DoesFileExist only, an optional PathName.
- Close the opened file handles only on success.
svn path=/branches/setup_improvements/; revision=74528
svn path=/branches/setup_improvements/; revision=74538
svn path=/branches/setup_improvements/; revision=74549