#1682942: add some ConfigParser features: alternate delimiters, alternate comments, empty lines in values.  Also enhance the docs with more examples and mention SafeConfigParser before ConfigParser.  Patch by Lukas Langa, review by myself, Eric and Ezio.

the first object in the pickle file.

And fix the email package to encode to ASCII instead of ``raw-unicode-escape`` before ASCII-to-binary decoding.

been increased from 100 to 500 and the cache replacement policy has changed
from simply clearing the entire cache on overflow to randomly forgetting 20%
of the existing cached compiled regular expressions.  This is a performance
win for applications that use a lot of regular expressions and limits the
impact of the performance hit anytime the cache is exceeded.

Changes include using a list of lines instead of patching together using
string interpolation, and a multi-line value test cases.

test_profilehooks to test_sys_setprofile so that test_trace can be
used for testing the trace module and for naming consistency.

test_sys_settrace and test_profilehooks to test_sys_setprofile in all
three branches.

assumes that the result of getgroups and the output
of the id(1) command return groups in the same
order.  That assumption is both fragile and false.

Changes the previously private attributes to make them public, increasing the potential for extending the library in user code. Backward-compatible and documented.