refactoring: unsigned int --> uint32_t
refactoring: unsigned short --> uint16_t
refactoring: unsigned long --> uint32_t
refactoring: unsigned --> uint32_t
refactoring: unsigned __int64 --> uint64_t
refactoring: __int64 --> int64_t
refactoring: static functions
fix warnings: The scope of the variable can be reduced.
fix warnings: Member variable is in the wrong place in the initializer list.
fix warnings:  Possible null pointer dereference
fix minor warnings
fix warnings: C-style pointer casting
code style
refactoring: use NullToEmpty
asserts
Revert "M0002146: Use privilege elevation API if possible"
FtpControlSocket.cpp: minor change
TFTPFileSystem::HandleAsynchRequestOverwrite: remove nested block
minor code style
struct t_transferfile