Fixes http://bugs.python.org/issue1233 - bsddb.dbshelve.DBShelf.append
was useless due to inverted logic.  Also adds a test case for RECNO dbs
to test_dbshelve.

See also https://bugs.launchpad.net/bugs/72505.

Fix Coverity 185-186:  If the passed in FILE is NULL, uninitialized memory
would be accessed.

on DBCursor.get (and a friends) when passing in a string key.

This code was broken if save() returned a negative number since i contained
a boolean value and then we compared i < 0 which should never be true.

Fix Coverity #158: Check the correct variable.

http://bugs.python.org/issue1053

 (backport from rev. 58204)

Fixes issue #1777530; backported from trunk.

to be orderable to properly represent them.
 (backport from rev. 58122)

 (backport from rev. 58119)

(backport from rev. 58117).

(backport from rev. 58115).

a readonly source.

  to include some information about the build environment.

to get dependencies right.

source encoding.