re PR middle-end/51212 (ICE: verify_flow_info failed: BB 3 can not throw but...

re PR middle-end/51212 (ICE: verify_flow_info failed: BB 3 can not throw but has an EH edge with -fgnu-tm -fnon-call-exceptions and transaction_callable)

        PR middle-end/51212
        * opts.c (finish_options): Sorry out when using transactional
        memory and non-call exceptions.
        * doc/invoke.texi (C Dialect Options): Document it.

From-SVN: r182877