It will with the new Qt at least. I think we discussed the libmlocale patch already, but there's a commit there that demonstrates what needs to be done:

https://github.com/nemomobile/libmlocale/commit/1753d4114a8015fad41552399620f3c6fa29f5f4

This will probably be addressed in a future Mer release and made unnecessary, but for the current one in build.merproject.org, it's needed.