Closed Feature: Rename method File.GetFileSystemEntryInfo() to File.GetFileSystemInfo() [21633]

The method has evolved.

It can now return FileSystemEntryInfo, FileSystemInfo (DirectoryInfo/FileInfo) and string object instances.
Comments: Resolved with changeset 112217: -Numerous documentation fixes, updated file headers ;
-Small improvement to method: Directory.SetCurrentDirectory();
-Renamed method Volume.GetVolumeInformation()() to GetVolumeInfo();
-Renamed method: File.GetFileSystemEntryInfo() to GetFileSystemEntry() and changed signature: Now uses c# type inference;