Forum OpenACS Development: Support for 3-chars language codes in acs-lang

I have implemented TIP #137 (https://openacs.org/forums/message-view?message_id=2929866). It's committed on HEAD. I had to modify install scripts and I provided upgrade ones for both databases (pg >= 8.2, oracle >= 9i). The script to create a new locale has been modified too.

I have tested on postgresql. Anyone can test on oracle? I don't have any oracle installed on my side.

Thanks in advance.