imports Python.h.

- minor cleanups

- separate two tests that were performed in the same test method
- normalize whitespace

a string. This then breaks when you do a Find. Force it to be a string.
Will backport to the 2.7 branch - it should probably go into the 2.6
branch too, but I'll let someone at ZC make that call. (mmm endless beta
cycle :)

to account for changes to mkzopeinstance which make a distinction.

Use the nt_svcutils package instead of the older Zope.Startup.nt package.

in both space and semicolon separated lists

- hoping it will become a standard tool as
  available with each Zope

the nt service utilities within ZEO and ZRS).

- move shared text for warnings so it isn't repeated

- test_path(): make this test pass; the "path" configuration field
  requires that the paths actually exist

the pyexpat module.

Document path and environment directives.

Implement new "environment" section in config file which allows the
setting of environment variables within the configuration file.

Implement new "path" section in config file which allows insertions into
the Python module search path within the configuration file.

Fix bug where $INSTANCE/Products was not inserted into the products
path by default.

Note that most of these changes are for more comprehensive Windows service
support.  Windows can't run a batch file as a service, and sometimes it
is necessary to both munge the python module search path and environment
at startup time.  Instead of writing an executable application to do this,
we rely on the configuration machinery.

Import TemporaryStorage files from the new tempstorage package.

(see related checkin for the tempstorage module in lib/python for rationale).

contains files related to the TemporaryStorage ZODB storage.

These files used to be in the TemporaryFolder Product, but have been
moved to solve issues which resulted from premature imports during startup
caused by import of the TemporaryFolder package
by the configuration machinery (particularly the premature import of
Globals, which pulls in almost every Zope package) during database setup.

     - PathIndex and TopicIndex are now using a counter for the number
       of indexed objects instead of using a very expensive calculation
       based on the keys of their indexes.

Allow for a different skelsrc directory at install time.

an ExtensionClass type that get into this code can raise RuntimeWarning
under Python 2.3, because the comparison result may be outside the
set {-1, 0, 1}.  Worse, on a box where sizeof(ptrdiff_t) > sizeof(int)
(all 64-bit platforms), comparison results across a set of objects
could be inconsistent because the implicit cast of pointer subtraction
to int loses the information-carrying sign bit.