[Serial4j-Error-Handling] Replace the hard-coded errno messages on the Errno Enums with C native function calls

[pavly-gerges]

The Errno.java enum constants uses hard-coded string literals for error messages when instantiating an exception. It's by far better to use the utility char * strerror (int errnum) from the string library, and build a data structure NativeErrno(int errno, String msg) that should be instantiated from the native side.