xfstests: RESULTS_DIR needs to be an absolute path

Some tests 'cd <somedir>' and then direct output to $RESULT_DIR,
which fails if the current working directory is not $here.
Regardless, if an external results directory is to be used it needs
to have a full path specified and the use of $here as the base of
the results files is completely incorrect.

Hence change all the $here/$seqres* references to simply be
$seqres*, and instead encode the full path to the results in
$RESULT_DIR.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Phil White <pwhite@sgi.com>
Signed-off-by: Rich Johnston <rjohnston@sgi.com>

tests/generic/112

@@ -81,7 +81,7 @@ _do_test()
     if ! $here/ltp/fsx $_param -P $here $seq.$_n &>/dev/null
     then
 	echo "    fsx ($_param) returned $? - see $seq.$_n.full"
-	mv $seq.$_n.fsxlog $here/$seq.$_n.full
+	mv $seq.$_n.fsxlog $seqres.$_n.full
 	status=1
 	exit
     fi
@@ -142,7 +142,7 @@ echo "Params: n = $numops1 N = $numops2 l = $filelen" >>$seqres.full
 
 _setup_testdir
 
-rm -f $here/$seqres.full
+rm -f $seqres.full
 echo "brevity is wit..."
 
 _check_test_fs