CRCs.

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. :)

Bug fix by mhammond.

Bug fix candidate for 2.2, not present in 2.1.

Mostly by Toby Dickenson and Titus Brown.

Add an optional argument to a decompression object's decompress()
method.  The argument specifies the maximum length of the return
value.  If the uncompressed data exceeds this length, the excess data
is stored as the unconsumed_tail attribute.  (Not to be confused with
unused_data, which is a separate issue.)

Difference from SF patch: Default value for unconsumed_tail is ""
rather than None.  It's simpler if the attribute is always a string.

  available in java, so only use the advanced flush options if they
  are defined in the zlib module.

    fails

    test case into a no-op because ''.join('hello world') == 'hello world'

    different flush values Z_NO_FLUSH, Z_SYNC_FLUSH, Z_FULL_FLUSH.

same on 32 and 64 bit machines.

only produce output if somethign goes wrong