ChangeFileOwner: set the owner of the file to real user instead of root.

FilesOpStructNew: Create a new 'FilesOpStruct' that hold some useful file/dir functions.

GetFileOwner: Work only for linux users.

GetRootCurrRealUser: Retrieve information about root state and current and real user.

OwnerStructNew: This structure gathers file permissions, the files owner change methods and Real, Current user information.

FileDetails: Contains all the information about a scanned file.

FilesOpStruct: Contains all the information of the scanned files (directories / files).

Structure that hold file permissions.