Merged revisions 78898 via svnmerge from

Merged revisions 78898 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r78898 | victor.stinner | 2010-03-13 04:27:07 +0100 (sam., 13 mars 2010) | 7 lines

  sqlite3: Fix a segfault on calling a connection with something else than a
  string. Initialize all attributes to be able to call the statement destructor
  on error.

  Avoid also a duplicate connection in some tests: setUp() does already open a
  connection (":memory:").
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