refactoring
cleanup
Merge branch 'winscp560'

* winscp560:
  cleanup
  refactoring
fix wrong non-ASCII strings encoding/decoding

(http://forum.farmanager.com/viewtopic.php?p=120841#p120841)
ChangeLog: update
filezilla: use nb_calloc for memory allocation
Merge branch 'winscp560'

* winscp560:
  filezilla: use nb_calloc for memory allocation
FileMasks.cpp: minor improvement
FileMasks.cpp: cleanup
FileMasks.cpp: sync with WinSCP
FileMasks.cpp: fix code style
bugfix: Filter not working on uploading files on server

Copy only new/changed files not working

(http://forum.farmanager.com/viewtopic.php?p=120480#p120480)
ChangeLog: update
Masks.cpp: cleanup