ringdevicemodel.cpp

- The std::ios_base::binary flag needs to be used when opening
  files for output of encoded data on windows, otherwise bytes with
  the value 0A (LF) will be replaced with 0D0A (CRLF).
  This will cause deserialization to behave incorrectly.

- This patch adds the binary flag where encoded data is saved for
  the name cache, id list, device list, node cache, contacts list,
  and incoming trust request list.

Change-Id: I0b1b671014af1cb42bc2f76a1064bc6008c70419