README for each new alpha release.

a missing part of the previous checkin message:

Marc-Andre Lemburg:

Added encoding name attributes to wrapper classes which
allow applications to check the used encoding names.

Changed PyUnicode_Splitlines() maxsplit argument to keepends.
The maxsplit functionality was replaced by the keepends
functionality which allows keeping the line end markers together
with the string.

The maxsplit functionality in .splitlines() was replaced by the keepends
functionality which allows keeping the line end markers together
with the string.

Added support for '%r' % obj: this inserts repr(obj) rather
than str(obj).

Added a few missing whitespace Unicode char mappings.
Thanks to Brian Hooper.

The maxsplit functionality in .splitlines() was replaced by the keepends
functionality which allows keeping the line end markers together
with the string.

Added special case to unicode(): when being passed a
Unicode object as first argument, return the object as-is.
Raises an exception when given a Unicode object *and* an
encoding name.

Added .writelines(), .readlines() and .readline() to all
codec classes.

Modified .splitlines() tests according to the changes
in stringobject.c.