2010-04-23  Manuel López-Ibáñez  <manu@gcc.gnu.org>

	* toplev.c (general_init): Set default for
	fdiagnostics-show-option.
	* opts.c (common_handle_option): Allow disabling it.
	* common.opt (fdiagnostics-show-option): Add Var. Enabled by
	default.
testsuite/	
	* gcc.dg/Wconversion-integer.c: Update.

From-SVN: r158676