Caution:  Since no deprecation warnings about Transaction.begin()
were raised by the test suite before this patch, none of this code
is exercised by the test suite -- or it is, but "something"
suppresses the deprecation warnings.  So it's hard to claim that
this patch has been tested; the strongest claim I can make is that
all the unit tests still pass.

1. a_Transaction_object.begin() is deprecated.  Don't use it.

2. Commit failure is "sticky" now:  the current transaction
   must be explicitly discarded (abort() or begin()) before
   a commit can succeed again.

Collector #1457: ZCTextIndex's QueryError and ParseError are now available for import from untrusted code.

     - Collector #1491: talgettext.py did not create a proper header
       for the generated .pot file if multiple pagetemplate files
       were processed.

- Updated to use transaction.commit() rather than
  get_transaction().commit()

       same signature as str.strip()

No commit message

dd Michael Dunstan's "explicit abort after error propagates into publisher" patch as documented in http://zope.org/Collectors/Zope/789 and as required by recent changes to ZODB which prevent a connection from being cleanly closed if modifications are extant in that connection.

(Merge from 2.7 branch)

via distutils to a relative path.

(corresponds with ZopeX3-3.0 branch revision 27434)

in HTTPRequest.keys() - it caches URLN and BASEN in other.

- synced interface and help file with implementation

from 'guarded_getattr'.

     - Collector #1267: applied patch to fix segmentation faults on 
       x86_64 systems