- Break the gc cycle in negotiation tests
- test the different guarantees of read_lazy and read_very_lazy

Issue #5695: Minor tweak to improve the code as suggested by Brett Cannon and as implemented in the Py3K branch.

  now collapsed within the url properly before looking in cgi_directories.

values that pwd.getpwnam() returns.

to avoid compiler warnings.

  new arguments introduced in 2.5.

Issue #2578

#1326077: fix traceback formatting of SyntaxErrors.  This fixes two differences with formatting coming from Python: a) the reproduction of location details in the error message if no line text is given, b) the prefixing of the last line by one space.

  (avoiding brown paper typo this time)