Correcting Sector build errors

If you are building Sector on Ubuntu or Mint, you might encounter three kinds of errors: One about ::close() in tcpTransport.cpp at line 157, next about usleep, and the other about SSL. SSL related errors look like below: /sector/common/ssltransport.cpp:229: undefined reference to `SSL_new’ /sector/common/ssltransport.cpp:230: undefined reference to `SSL_set_fd’ /sector/common/ssltransport.cpp:232: undefined reference to `SSL_connect’ /sector/common/ssltransport.cpp:234: undefined…

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