PyUnicode_DecodeUTF8() once, remember the result and output it in a second
step. This avoids problems with counting UTF-8 bytes that ignores the effect
of using the replace error handler in PyUnicode_DecodeUTF8().

the is_*() methods and into module private instances.

many problems with the ancient mcast.py demo code.

which not only have embedded spaces, but leading spaces.

developing experimental versions of IDLE which are
not installed in the standard location.

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saving memory and avoiding growth in size of subsequent pickles. Proposal
and original patch by Jake McGuire.

Closes issue 5679.

Michael Foord

This is done by recording the current time -1sec, and not re-reading unless
the directory mod. times are >= the recorded time.

(Related to issue #5880).

calls sys.exit.

Closes issue 3379.

Michael Foord

Issue #5726: Make Modules/ld_so_aix return the actual exit code of the linker, rather than always exit successfully.
Patch by Floris Bruynooghe.

error when a named pipe is encountered, rather than blocking infinitely.

Based off of subversion r69 from http://code.google.com/p/ipaddr-py/

This code is 2to3 safe, I'll merge it into py3k later this afternoon.

All changes are mirrored to the underlying os.environ dict, but rolled back
on exit from the with block.

"<local>" macro as the only entry, this function bypasses any host name that
does not contain a period.

more cleanup, but I don't know now to kill turtles.  Especially
unexpected ones... ;)

(Backport of r72109 from py3k.)