unclear whether the verbatim text should have been indented or by how much.

Closes issue #2790.

test.test_support.catch_warning() where showwarning() was not being set
properly.

triggered warnings should be captured. This allows the context manager to be
used to just prevent the internal state of the 'warnings' framework and thus
allow triggered warnings to be displayed.

version on OSX 10.4.10

Make the Python implementation of warnings compatible with the C implementation regarding non-callable showwarning

Use float constructors instead of magic code for float constants

the stack was being unwound by two levels instead of one each time.