Work around AIX shell builtin printf not handling \NNN.
On AIX, ksh builtin printf does not understand \NNN. Some tests use this
to generate test data, and so fail on AIX. Rework these tests to use python
to generate the correct characters. This fixes the tests on AIX and should
be more generally portable.
running: init test1
result: None
running: add foo
result: 0
running: commit -m commit1 -d 2000-01-01 foo
result: None
running: commit -m commit2 -d 2000-01-02 foo
result: None
running: log -r 0
changeset: 0:0e4634943879
user: test
date: Sat Jan 01 00:00:00 2000 +0000
summary: commit1
result: None
running: log -r tip
changeset: 1:45589e459b2e
tag: tip
user: test
date: Sun Jan 02 00:00:00 2000 +0000
summary: commit2
result: None