Add C API function Py_GetBuildNumber(), add it to the interactive prompt
banner (i.e. Py_GetBuildInfo()), and add it as the sys.build_number
attribute.  The build number is a string instead of an int because it may
contain a trailing 'M' if there are local modifications.

We still need a change in the reference manual to reflect the
new try statement.

Modified since ast-arenas was implemented.

simplifies a lot of error handling code, and fixes many memory leaks.

(reported by Chris Olds).  Backported from the 1.0.6 development
branch.

just like string codecs.

	http://www.tortall.net/mu/blog/2005/12/01

Pointed out from SF #1365916.

Backport candidate.

(calling ftell(stdin) doesn't seem defined).  So we won't test errors
from ftell unless we can do it portably.

using the Python implementations of the functions. This imcreases code
coverage and makes sure that both implementations do the same thing.

  svn:ignore *.pyc *.pyo
  svn:eol-style native

The .py files appear to have been checked in with Windows or inconsistent line
endings.  The current check-in disrupts the 'svn blame', but hopefully it is
irrelevant for freshly imported code.

Supresses numerous pages of compiler warnings.

comment based on 'sys.args[0]' does not depend on the path.  For Python
builds from a remote directory ("/path/to/configure; make") the previous
logic used to include the "/path/to" portion in Python-ast.h.  Then svn
would consider this file to be locally modified.