-fix for 1 attribute only

This code looks for the __error_log__ attribute in order to report an
error.  If it finds no such attribute, it reports the error in a
different way.  Unfortunately, the alternative branch was reporting
the exception that just happened to occur most recently, which is
irrelevant; it needs to report the error that was passed to it.
Fixed.

Please make all future changes on the Zope-2_7-branch instead.

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.