Testsuite fixes.

* paxutils: Update.
* src/unlink.c (flush_deferred_unlinks): OpenSolaris sets EEXIST
instead of ENOTEMPTY if trying to remove a non-empty directory.
* tests/numeric.at: Avoid using awk -v: some older awks don't support
that option.  Also fix environment variable usage.
* tests/onetop05.at: Skip test if unable to set initial directory
mode bits.
* tests/sparse06.at: Use --quiet option.

tests/sparse06.at

@@ -23,7 +23,7 @@ AT_KEYWORDS([sparse sparse06])
 
 m4_define([check_pattern],[
 rm -rf out archive.tar smallsparse && mkdir out
-genfile --sparse --file smallsparse $1
+genfile --sparse --quiet --file smallsparse $1
 tar -cSf archive.tar smallsparse
 tar -xf archive.tar -C out
 cmp smallsparse out/smallsparse
@@ -50,7 +50,6 @@ check_pattern([10M DEF 20M GHI 30M JKL 40M])
 
 ],
 [0],,
-[genfile: created file is not sparse
-],,,[posix])
+[],,,[posix])
 
 AT_CLEANUP