* Add support for solaris
* Change state to handle system dependent termios type.
* Move syscalls to get and set termios to functions in files only built
for respective platforms.
* Create `term_unix.go` go file built on all supported unices except
solaris with types and functions valid for all of them.
* Change `MakeRaw` to set VMIN and VTIME to default values.
Fixes#95.
* Fix error handling
Doing the string comparison could be improved, but at least we should
return an error, if it is not "errno 0".
Gereon Frey