LINE events when not __debug__.  But we get them anyway under -O now,
so just stop special-casing non-__debug__ mode.

[ 587993 ] SET_LINENO killer

Remove SET_LINENO.  Tracing is now supported by inspecting co_lnotab.

Many sundry changes to document and adapt to this change.

imports e.g. test_support must do so using an absolute package name
such as "import test.test_support" or "from test import test_support".

This also updates the README in Lib/test, and gets rid of the
duplicate data dirctory in Lib/test/data (replaced by
Lib/email/test/data).

Now Tim and Jack can have at it. :)

file object that LogReader opens.  Used it then in test_hotshot; the
test passes again on Windows.  Thank Guido for the analysis.

and that I don't know how to fix it.  Fred?

The right fix is to generate line number events anyway ;-), but this will
have to do for now.

Remove the log file after we are done with it.  This should clean up after
the test even on Windows, since the file is now closed before we attempt
removal.

Simply commented it out, and then test_hotshot passes on Windows.
Leaving to Fred to fix "the right way" (it seems to be a feature of
unittest that all unittests try to unlink open files <wink>).

reported and can read the log back in.