Check for readline 2.2 features.  This should make it possible to
compile readline.c again with GNU readline versions 2.0 or 2.1; this
ability was removed in readline.c rev. 2.49.  Apparently the older
versions are still in widespread deployment on older Solaris
installations.  With an older readline, completion behavior is subtly
different (a space is always added).

specifically that dots are allowed in obs-phrase.  This fixes parsing
of dots in realnames.

RFC 2822's rules w.r.t. dots in the realname part of address fields.

The new "substr in str" feature masked the error.

ignore tuple.

The line, "from _random import Random as CoreGenerator", fools the test
code which expects CoreGenerator.__name__ to be "CoreGenerator" instead
of "Random".

the _random subclass for Random.

  * channels() -> devices()
  * stereochannels() -> stereodevices()
  * recchannels() -> recdevices()
  * getvol() -> get()
  * setvol() -> set()
This is for (slightly) more consistency with the OSS ioctl names
(READ_DEVMASK, READ_RECMASK, READ_STEREODEVS).

Also make sure the C function names correspond more closely to the
Python method names for mixer methods.

(It added nothing, and served no obvious purpose.)

Export SOUND_MIXER_NRDEVICES constant.

random number generator.  Altered it a bit to use the old generator
and restore the test.

into the core DLL, since it's not much code and lots of stuff uses
it (e.g., try getting a tempfile name without it).

Guido has in mind an easier way for users to code this stuff, but the
only tests we have now are for fixed-offset tzinfo classes, and this
stuff is extremely delicate in the endcases (read the new test code
for why:  there are holes in time <wink>).

core generator for random.py.

M PyShell.py

1. PyShell Rev 1.39, EditorWindow Rev 1.37 fix was not handling a
   multiline prompt.
2. The same fix introduced a bug where hitting <enter> at a previous
   prompt-only line would copy the prompt to the iomark.
3. Move the setting of sys.ps1 earlier, into PyShell.main(), to allow
   this code to work before a shell is started up.
4. If cursor is on the input line in the prompt, and you hit <enter>,
   process the line instead of complaining.
5. If line has no stdin range (this includes the last line before shell
   restart) strip any prompt before recalling.

Also, made some whitespace cleanup.

Python 2.2.x backport candidate. (This bug has been around since
Python 1.6.)

Suggested by MvL.

equality.  Note, there is another flavor that compares to a given
number of significant digits rather than decimal places.  If there
is a demand, that could be added at a later date.

Obtain cleaner coding and a system wide
performance boost by using the fast, pre-parsed
PyArg_Unpack function instead of PyArg_ParseTuple
function which is driven by a format string.

experimental.

This can cause core dumps when Python runs.  Python relies on the 754-
(and C99-) mandated default "non-stop" mode for FP exceptions.  This
patch from Ben Laurie disables at least one FP exception on FreeBSD at
Python startup time.