script/autobuild.py: make sure --nonshared-binary=smbtorture,smbd/smbd keeps working

script/autobuild.py: make sure --nonshared-binary=smbtorture,smbd/smbd keeps working

- It's very useful to have a static smbtorture binary that can be copied arround.
- It's sometimes also useful to have a static smbd binary in order avoid
  runtime overhead via do_lookup_x() (in ld*.so), note that

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Thu Aug 20 19:10:19 CEST 2015 on sn-devel-104