Update to 1.4.2
- New upstream release 1.4.2
- Return LIBSSH2_ERROR_SOCKET_DISCONNECT on EOF when reading banner
- userauth.c: fread() from public key file to correctly detect any errors
- configure.ac: add option to disable build of the example applications
- added 'Requires.private:' line to libssh2.pc
- SFTP: filter off incoming "zombie" responses
- gettimeofday: no need for a replacement under cygwin
- SSH_MSG_CHANNEL_REQUEST: default to want_reply
- win32/libssh2_config.h: remove hardcoded #define LIBSSH2_HAVE_ZLIB