Cleanup.
Refactoring: THROW_FILE_SKIPPED --> ThrowFileSkipped; THROW_SCP_ERROR --> ThrowScpEror
ScpFileSystem.cpp: Minor code style fix.
Refactoring: inline void SCPError
SftpFileSystem.cpp: Fix cppcheck warning.
SftpFileSystem.cpp: Fix cppcheck warning:  Variable 'LocalFileHandle' is assigned a value that is never used.
SftpFileSystem.cpp: Fix cppcheck warnings: The scope of the variable can be reduced.
SftpFileSystem.cpp: Fix file handle manipulations.
ScpFileSystem.cpp: Fix file handle manipulations.
TStringList::ExchangeItems: Cleanup.
Minor code style fixes.
Refactoring: ::UnixExtractFilePath
Merge branch 'master' into far3

* master:
  Refactoring: ::UnixExtractFilePath
  Minor code style fixes.
  TStringList::ExchangeItems: Cleanup.
  ScpFileSystem.cpp: Fix file handle manipulations.
  SftpFileSystem.cpp: Fix file handle manipulations.
  SftpFileSystem.cpp: Fix cppcheck warnings: The scope of the variable can be reduced.
  SftpFileSystem.cpp: Fix cppcheck warning:  Variable 'LocalFileHandle' is assigned a value that is never used.
  SftpFileSystem.cpp: Fix cppcheck warning.
  Refactoring: inline void SCPError
  ScpFileSystem.cpp: Minor code style fix.
  Refactoring: THROW_FILE_SKIPPED --> ThrowFileSkipped; THROW_SCP_ERROR --> ThrowScpEror