Set autoincrement to False; use sqlite_autoincrement in versioned_history

Set autoincrement to False; use sqlite_autoincrement in versioned_history

Ensure that the history table sets autoincrement=False, since these values
are copied in all cases; the flag will emit an error as of 1.1 if the
primary key is composite.   Additionally, use the sqlite_autoincrement flag
so that SQLite uses unique primary key identifiers for new rows even if
some rows have been deleted.

Fixes: #3872
Change-Id: I65912eb394b3b69d7f4e3c098f4f948b0a7a5374
Pull-request: https://bitbucket.org/zzzeek/sqlalchemy/pull-requests/93