[PATCH] btree_gin, add support for uuid, bool, name, bpchar and anyrange types

Hi all.

Here is a patch to add support for more types on btree_gin.

I was missing UUID type, so I added it. Since I was there, I checked all
other built-in types with B-tree but not GIN support, and the remaining
list was: uuid, bool, name, bpchar and anyrange (at least ones that seem to
make sense to me). So I added support for all of them.

If you have any other type I missed and you wish to have support to, please
let me know and I can add it.

Thanks a lot.

Regards,
-- 
Matheus de Oliveira