Log Message:
Update to 1.634

Upstream changes:
Changes in DBI 1.634 - 3rd August 2015

    Enabled strictures on all modules (Jose Luis Perez Diez) #22
        Note that this might cause new exceptions in existing code.
        Please take time for extra testing before deploying to production.
    Improved handling of row counts for compiled drivers and enable them to
        return larger row counts (IV type) by defining new *_iv macros.
    Fixed quote_identifier that was adding a trailing separator when there
        was only a catalog (Martin J. Evans)

    Removed redundant keys() call in fetchall_arrayref with hash slice (ilmari) #24
    Corrected pod xref to Placeholders section (Matthew D. Fuller)
    Corrected pod grammar (Nick Tonkin) #25

    Added support for tables('', '', '', '%') special case (Martin J. Evans)
    Added support for DBD prefixes with numbers (Jens Rehsack) #19
    Added extra initializer for DBI::DBD::SqlEngine based DBD's (Jens Rehsack)
    Added Memory Leaks section to the DBI docs (Tim)
    Added Artistic v1 & GPL v1 LICENSE file (Jose Luis Perez Diez) #21