We need to retain the old names for backwards compatibility, but please annotate them with @deprecated and move them to the end of the file.

I've added operator overloads that depend on #2374 with the old constants to have almost full backwards compatibility (it won't work if someone stored the flags in a Tcflags variable and assigned it directly, but it should work everywhere else. let me know if I should change it to use bitstruct constants instead), and I have changed the constants to be octal literals so they have the correct value.

something like this (example from my old project):

term.c_lflag &= ~(termios::ECHO | termios::ICANON | termios::ISIG | termios::IEXTEN);
term.c_iflag &= ~(termios::IXON | termios::ICRNL | termios::BRKINT | termios::INPCK | termios::ISTRIP);
term.c_oflag &= ~(termios::OPOST);
term.c_cflag |= (termios::CS8);

will work properly (after the operator overload bug is fixed), and behave exactly the same as this:

term.c_lflag &= ~(Tc_lflags){.echo, .icanon, .isig, .iexten};
term.c_iflag &= ~(Tc_iflags){.ixon, .icrnl, .brkint, .inpck, .istrip};
term.c_oflag.opost = false;
term.c_cflag.csize = CS8;

I've changed it so the deprecated constants use bitstructs instead of relying on operator overloading that shouldn't work.
the example I gave in the above comment still works

Thank you!