refactoring: TFTPFileSystem::AutoDetectTimeDifference()
minor code style
use ::towupper ::towlower
Sysutils.cpp: cleanup
refactoring: TWinSCPFileSystem::ExecuteCommand()
fix typos
TWinSCPFileSystem::GetFindDataEx: check symlink type
version info: update
TFTPFileSystem::DoReadDirectory: do not call AutoDetectTimeDifference
version info: update
Merge branch 'master' into far3

* master:
  version info: update
  TFTPFileSystem::DoReadDirectory: do not call AutoDetectTimeDifference
  version info: update
  TWinSCPFileSystem::GetFindDataEx: check symlink type
  fix typos
  refactoring: TWinSCPFileSystem::ExecuteCommand()
  Sysutils.cpp: cleanup
  use ::towupper ::towlower
  minor code style
  refactoring: TFTPFileSystem::AutoDetectTimeDifference()

Conflicts:
	src/NetBox/WinSCPFileSystem.cpp