Non-iso 639-* language codes

[BarnabasSzabolcs]

There are some languages that are not part of Iso 639-1, they are named correctly according to the next available inclusive standard (iso 639-2 or iso 639-3) however there are there are two incorrect or incorrectly named languages:

1. Hebrew language language code is 'he' usually, not 'iw'.
2. 'Filipino' is not 'fil' but 'Tagalog', 'tl'.

Fixing these languages should be as easy as writing a wrapper.