update openssl version info
.gitignore: update
fix warnings: uninitialized variable
fix warnings: external/internal linkage conflict with previous declaration
fix warnings: conversion from 'size_t' to 'int', possible loss of data
fix code style
bugfix: SFTP: AV after Shutdown -> Sleep

http://forum.farmanager.com/viewtopic.php?f=5&t=6317&p=118095#p118057
version info: update