Notes:
* This is a somewhat reworked version of what is currently in bf-translation's trunk/po/tools, not yet fully functionnal (well, 95% is ;) ) nor fully tested. ultimately, it will replace it (being "svn-linked" in bf-translation).
* Added feature: more complete/strict tests (yet some work to be done here).
* Added spell checking (huge spellcheck commit incomming...).
* Trying to get rid of xgettext itself (should e.g. allow us to use #defines as contexts, among other things...). But currently captures less strings, work needed here too.
Please note this includes libfribidi.dll, as it is hard to find it for windows (unixes should have no problems here).
