(bug 29788) Swedish Collation (uppercase-sv). Swaps Ä and Æ

See I4542f57a. Meant as a temporary meassure until such a time
generic tailoring code is implemented for uca. This patch
is mostly Lejonel's code, with the class renamed.

Change-Id: Id39406c37a5277d9e7a9216544de2140411c2b01