Log Message:
Update to 0.97

Upstream changes:
0.97	- 2013-03-30, H.Merijn Brand
    * Regain the speed from 0.91 (buffer back to 1k)
    * Minor cleanup in XS code
    * Add diag_verbose attribute

0.96	- 2013-03-26, H.Merijn Brand
    * No need to require Test::Harness if unused (RT#82693)
    * parse ("") should return one empty field, not undef
    * Now that we know the record number, show it in auto_diag

0.95	- 2013-01-13, H.Merijn Brand
    * Introduce allow_unquoted_escape as workaround for RT#81295
    * Update copyright to 2013
    * Introduce print_hr () for RT#76143
    * Dropped plans to support EBCDIC