Add Short file name (= alternate file name, DOS 8.3...)

[Liryna]

Short file name is not supported on Dokan today. This should be done here and here. Then user-mode callback structure should be extended to allow user-mode file system to define this value (this shouldn't be handled by the driver with RtlGenerate8dot3Name). Maybe a new

#define DOKAN_OPTION_SHORTNAME 512 // short name is supported

should also be added. It will be the user-mode driver responsibility to resolve short file name on IRP_MJ_CREATE.

fsutil 8dot3name query E: (where E: is your dokan drive) should also return correct stat.

[Rondom]

FindFiles needs to account for both names as well.