[win32][vfs] Add CWin32SMBFile class for files on SMB shares for win32
[win32][vfs] FileFactory: switch to new implementation of Win32SMBFile
[win32] Remove old WINFileSMB and WINSMBDirectory
Merge pull request #5284 from Karlson2k/win32smbfile_01

[win32] (Re)implement Win32SMBFile