test-interactive: use stable EOL in various file generating routines

The seq.py and shell echo redirected to a file ends up with platform
specific EOL, which throws off the hash when the file is committed to
the test repo on Windows. The other option is to glob the hashes, but
the ability to see if they have changed might point out problems that
would otherwise be missed.

tests/test-commit-interactive-curses.t

@@ -45,7 +45,7 b' Committing some changes'
 Committing only one file
 
   $ echo "a" >> a
-  $ python $TESTDIR/seq.py 1 10 > b
+  >>> open('b', 'wb').write("1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n")
   $ hg add b
   $ cat <<EOF >testModeCommands
   > TOGGLE

tests/test-revert-interactive.t

@@ -21,13 +21,17 b' 10 run the same test than 8 from within '
   $ mkdir -p a/folder1 a/folder2
   $ cd a
   $ hg init
-  $ python $TESTDIR/seq.py 1 5 > f ; hg add f ; hg commit -m "adding f"
+  >>> open('f', 'wb').write("1\n2\n3\n4\n5\n")
+  $ hg add f ; hg commit -m "adding f"
   $ cat f > folder1/g ; hg add folder1/g ; hg commit -m "adding folder1/g"
   $ cat f > folder2/h ; hg add folder2/h ; hg commit -m "adding folder2/h"
   $ cat f > folder1/i ; hg add folder1/i ; hg commit -m "adding folder1/i"
-  $ echo "a" > f ; python $TESTDIR/seq.py 1 5 >> f ; echo "b" >> f ; hg commit -m "modifying f"
-  $ echo "c" > folder1/g ; python $TESTDIR/seq.py 1 5 >> folder1/g ; echo "d" >> folder1/g ; hg commit -m "modifying folder1/g"
-  $ echo "e" > folder2/h ; python $TESTDIR/seq.py 1 5 >> folder2/h ; echo "f" >> folder2/h ; hg commit -m "modifying folder2/h"
+  >>> open('f', 'wb').write("a\n1\n2\n3\n4\n5\nb\n")
+  $ hg commit -m "modifying f"
+  >>> open('folder1/g', 'wb').write("c\n1\n2\n3\n4\n5\nd\n")
+  $ hg commit -m "modifying folder1/g"
+  >>> open('folder2/h', 'wb').write("e\n1\n2\n3\n4\n5\nf\n")
+  $ hg commit -m "modifying folder2/h"
   $ hg tip
   changeset:   6:59dd6e4ab63a
   tag:         tip