misc changes
iptsocks_new: shutdown other connection instead of closing when recv returns EOF
iptsocks_new: shutdown both read and write on close
revert 70f78e65feab637ad6c6ea035cb9f828cf20db0f
common_headers/delegate.H: fix compilation error
cpoll: add ability to perform readTo() and send read data to a Stream, eliminating the use of std::string
misc changes
cppsp: add .gitignore