diagnostics: make context::m_source_printing private

diagnostics: make context::m_source_printing private

No functional change intended.

gcc/ada/ChangeLog:
	* gcc-interface/misc.cc: Make
	diagnostics::context::m_source_printing private.

gcc/analyzer/ChangeLog:
	* program-point.cc: Make diagnostics::context::m_source_printing
	private.

gcc/c-family/ChangeLog:
	* c-common.cc: Make diagnostics::context::m_source_printing
	private.
	* c-format.cc: Likewise.
	* c-opts.cc: Likewise.

gcc/ChangeLog:
	* diagnostic.h (diagnostic_set_caret_max_width): Drop forward
	decl.
	(diagnostic_same_line): Make
	diagnostics::context::m_source_printing private.
	* diagnostics/context.cc (diagnostic_set_caret_max_width): Convert
	to...
	(diagnostics::context::set_caret_max_width): ...this.
	* diagnostics/context.h
	(diagnostics::context::get_source_printing_options): New
	accessors.
	(diagnostics::context::m_source_printing): Make private.
	* diagnostics/html-sink.cc: Make
	diagnostics::context::m_source_printing private.
	* diagnostics/paths-output.cc: Likewise.
	* diagnostics/sarif-sink.cc: Likewise.
	* diagnostics/selftest-context.cc: Likewise.
	* diagnostics/selftest-context.h
	(diagnostics::selftest::test_context::colorize_source): New.
	(diagnostics::selftest::test_context::show_labels): New.
	(diagnostics::selftest::test_context::show_line_numbers): New.
	(diagnostics::selftest::test_context::show_ruler): New.
	(diagnostics::selftest::test_context::show_event_links): New.
	(diagnostics::selftest::test_context::set_caret_char): New.
	* diagnostics/source-printing.cc: Make
	diagnostics::context::m_source_printing private.
	* diagnostics/text-sink.h: Likewise.
	* libgdiagnostics.cc: Likewise.
	* opts.cc: Likewise.
	* toplev.cc: Likewise.

gcc/fortran/ChangeLog:
	* error.cc: Make diagnostics::context::m_source_printing private.

gcc/testsuite/ChangeLog:
	* gcc.dg/plugin/diagnostic_plugin_show_trees.cc: Make
	diagnostics::context::m_source_printing private.
	* gcc.dg/plugin/diagnostic_plugin_test_inlining.cc: Likewise.
	* gcc.dg/plugin/diagnostic_plugin_test_string_literals.cc:
	Likewise.
	* gcc.dg/plugin/diagnostic_plugin_test_tree_expression_range.cc:
	Likewise.
	* gcc.dg/plugin/diagnostic_plugin_test_paths.cc: Likewise.
	* gcc.dg/plugin/diagnostic_plugin_test_show_locus.cc: Likewise.
	* gcc.dg/plugin/expensive_selftests_plugin.cc: Likewise.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>