merged/updated AROS/i386 target to trunk from AROS branch, to support Marcus Sackrow's work on AROS support which will hopefully benefit all Amiga-like targets (classic, MorphOS) on the long run. Compiler only, RTL comes in the next run.

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@28432 3ad0048d-3df7-0310-abae-a5850022a9f2