Don't use icc -dryrun output to get a list of commands for execution,
it's not always correct. Use native binaries $PREFIX/icc11/libexec/{ld,as}
instead. These wrappers modify command line arguments, move temporary
files from /emul/linux/tmp to /tmp and pass modified command line
to real ld and as binaries.
Use common $DISTNAME for i386 and amd64. This nearly doubles a size
(from 700M to over 1G) to download. The new distfle will be required
to support ABI=32 on amd64. A nice side effect of the common distname
is no need to support different set of patches for i386 and amd64
(see patch-ac and patch-ah).
