* diagnostic.c (print_error_function): Remove.
	(default_print_error_function): Rename.
	(report_error_function): Update.
	* diagnostic.h (print_error_function): Remove.
	(default_print_error_function): Remove.
	* langhooks-def.h (struct diagnostic_context): Predeclare.
	(lhd_print_error_function, LANG_HOOKS_PRINT_ERROR_FUNCTION): New.
	(LANG_HOOKS_INITIALIZER): Update.
	* langhooks.h (struct diagnostic context): Predeclare.
	(struct lang_hooks): New hook.
cp:
	* Make-lang.in (error.o): Update.
	* cp-lang.c (LANG_HOOKS_PRINT_ERROR_FUNCTION): Redefine.
	* cp-tree.h (struct diagnostic_context): Predeclare.
	(cxx_print_error_function): New.
	* error.c: Include langhooks-def.h.
	(lang_print_error_function): Rename.  Update.
	(init_error): Don't set hook.
f:
	* com.c (lang_print_error_function): Rename.
	(LANG_HOOKS_PRINT_ERROR_FUNCTION): Redefine.
	(ffe_init): Don't set hook.
java:
	* lang.c (LANG_HOOKS_PRINT_ERROR_FUNCTION): Redefine.
	(java_dummy_print): Remove.
	(lang_print_error): Rename.  Exit early if inhibiting output.
	(inhibit_error_printing_function): New.
	(java_init): Don't set hook.
	(lang_init_source): Use new boolean.

From-SVN: r51672