Import Eclipse Project-Files.

Modify .gitignore to ignore bin/ and lib/.
Adding jaxb/lib folder to classpath.

https://jaxb.java.net/2.2.6/
Fixing UTFInputStream to not rely on available()

(`InputStream.read()` is not forced to read `available()` bytes. Check the return value of `InputStream.read` to know, how many bytes have been read.)