maps: handle sqlite lock error triggered by PRAGMA statements "self._db.execute('PRAGMA cache_size=%d' % (-cachesize))" could raise "OperationalError: database is locked". Therefore move PRAGMA statements inside "self._transaction" which handles the "locked" error automatically.

include Makefile hgsubversion/help/*.rst tests/fixtures/invalid_utf8.tar.gz
recursive-include tests *.py *.sh *.svndump *.txt