Script to merge .po files

[Igor Pires Soares]

Hello,
Since we from Brazilian Portuguese Translation Team had problems to
merge out of date .po files, our friend Diego Búrigo Zacarão came up
with this 
script to merge them with all .pot ones. We are using this script to
check weekly the real status of our translation and to update the
language files. 
We know that it happens with other languages too, so we decided to
translate it to English and make it available for all the translators.
Feel free to 
modify and make it better.

Igor Pires Soares