[PATCH] rearrange code in intl sub directory

[Andrei Kholodnyi]

Hi William,

Here are some remarks.

Name of the patch does not correspond to what it is doing.

Patch itself is a way too big and shall be split into several patches.
I see from your description there are at least 3 steps:
- moves intl/ to src/common
- turns that directory into a library of common routines
- creates an include/ directory

Thanks,
Andrei.