On my Fedora 19 box, the exclude08 & exclude11 tests failed before
this fix. The reason was that the directory traversing chosen the
file order differently than the testsuite expected.
* tests/exclude08.at: Sort the tarball content output.
* tests/exclude09.at: Likewise.
* tests/exclude10.at: Likewise.
* tests/exclude11.at: Likewise.
* tests/exclude12.at: Likewise.
* tests/exclude13.at: Likewise.
* tests/exclude14.at: Likewise.
* tests/exclude15.at: Likewise.
* tests/exclude16.at: Likewise.