Redirect stdin from the input file, rather than passing the input file to

uuencode(1), and set a umask, so that the mode in the header is predictable.

If it varies, then the test is right to fail.

Remove the note about this test falsely failing, with that in mind.

tools/regression/usr.bin/uuencode/regress.sh

@@ -9,19 +9,17 @@ cd $TESTDIR
 
 STATUS=0
 
-# Note that currently the uuencode(1) program provides no facility to
-# include the file mode explicitly based on an argument passed to it,
-# so the regress.in file must be mode 644, or the test will say that,
-# incorrectly, regression has occurred based on the header.
+# To make sure we end up with matching headers.
+umask 022
 
 for test in traditional base64; do
   echo "Running test $test"
   case "$test" in
   traditional)
-    uuencode regress.in regress.in | diff -u regress.$test.out -
+    uuencode regress.in < regress.in | diff -u regress.$test.out -
     ;;
   base64)
-    uuencode -m regress.in regress.in | diff -u regress.$test.out -
+    uuencode -m regress.in < regress.in | diff -u regress.$test.out -
     ;;
   esac
   if [ $? -eq 0 ]; then