gfortran.h (gfc_option_t): Add rtcheck.

2009-03-28  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
            Paul Thomas  <pault@gcc.gnu.org>
            Tobias Burnus  <burnus@net-b.de>

        * gfortran.h (gfc_option_t): Add rtcheck.
        * lang.opt: New option -fruntime-check.
        * libgfortran.h: Add GFC_RTCHECK_* constants.
        * invoke.texi: Document -fruntime-check.
        * options.c (gfc_handle_runtime_check_option): New function.
        (gfc_init_options,gfc_post_options,gfc_handle_option):
        Add -fruntime-check option.


Co-Authored-By: Paul Thomas <pault@gcc.gnu.org>
Co-Authored-By: Tobias Burnus <burnus@net-b.de>

From-SVN: r145183