* return an integer rather than a boolean

Closes bug #1083645.  Thanks Detlef Vollmann.

This is to avoid a problem that inconsistently comes up where the environment
variable is unset while the Makefile clearly has the values set and are used
during ``make``.

Closes bug #1081045.

* The decimal module wouldn't load on builds without threads.

unsized iterable inputs.

* Improve algorithm -- no more O(n) steps except sched.cancel().
* Improve thread safety of sched.run() and sched.empty()
  (other threads could alter the queue between the time the queue was
   first checked and when the lead event was deleted).
* Localize variable access in sched.run() to minimize overhead.

* Added missing error checks.
* Fixed O(n**2) growth pattern.  Modeled after lists to achieve linear
  amortized resizing.  Improves construction of "tuple(it)" when "it" is
  large and does not have a __len__ method.  Other cases are unaffected.

doesn't seem to like "UTF-8").

Removed the UTF-8 aliases since these should be available for all locales.

code.  This version is much cleaner and makes a proper attempt at
pairing up the correct header file and library.

* bumped the module version number up to 4.3.0

- Doc/lib/libbase64.tex
s/algorith/algorithm

- Doc/lib/libpickle.tex
s/interchangable/interchangeable

- Doc/lib/libxmlrpclib.tex
s/{_cmp__}/{__cmp__}

leading underscore needs to be double, not single.

- Doc/ref/ref6.tex
0/1 => False/True

more. Thanks to Simon Percivall!

The patch makes changes to inspect.py in two places:

* the pattern to match against functions at line 436 is
modified: lambdas should be matched even if not
preceded by whitespace, as long as "lambda" isn't part
of another word.

* the BlockFinder class is heavily modified. Changes are:
- checking for "def", "class" or "lambda" names
before setting self.started to True. Then checking the
same line for word characters after the colon (if the
colon is on that line). If so, and the line does not
end with a line continuation marker, raise EndOfBlock
immediately.
- adding self.passline to show that the line is to be
included and no more checking is necessary on that
line. Since a NEWLINE token is not generated when a
line continuation marker exists, this allows getsource
to continue with these functions even if the following
line would not be indented.

Also add a bunch of
'quite-unlikely-to-occur-in-real-life-but-working-anyway' tests.

the fodder modules to separate files to get rid of the imp.load_source()
trickery.

Michael Hudson.

Also revise a related function to minimise file handle/pipe leakage
and improve reliability.

expand_tabs, on the object being wrapped.

The sys module could be called before being imported.

Tools/i18n/makelocalealias.py, a tool to parse the X11 locale
alias file); the encoding lookup was enhanced to use Python's
encoding alias table

As sige-effect, this fixes SF bug [ 1080864 ] locale.py doesn't recognize
valid locale setting.

* Note correct return type is int.
* Note that -1 returned on failure.

half was removed in revision 1.25