PR jit/66628: add gcc_jit_context_add_command_line_option

PR jit/66628: add gcc_jit_context_add_command_line_option

gcc/jit/ChangeLog:
	PR jit/66628
	* docs/cp/topics/contexts.rst (Additional command-line options):
	New section.
	* docs/topics/compatibility.rst: New file.
	* docs/topics/contexts.rst (Additional command-line options): New
	section.
	* docs/topics/index.rst: Add compatibility.rst.
	* docs/_build/texinfo/libgccjit.texi: Regenerate.
	* jit-playback.c (make_fake_args): Add call to
	append_command_line_options.
	* jit-recording.c: Within namespace gcc::jit...
	(recording::context::~context): Free the optnames within
	m_command_line_options.
	(recording::context::set_bool_option): Likewise.
	(recording::context::add_command_line_option): New method.
	(recording::context::append_command_line_options): New method.
	(recording::context::dump_reproducer_to_file): Add command-line
	options.
	* jit-recording.h: Within namespace gcc::jit...
	(recording::context::add_command_line_option): New method.
	(recording::context::append_command_line_options): New method.
	(recording::context::m_command_line_options): New field.
	* libgccjit++.h (gccjit::context::add_command_line_option): New
	method.
	* libgccjit.c (gcc_jit_context_add_command_line_option): New API
	entrypoint.
	* libgccjit.h (gcc_jit_context_add_command_line_option): New API
	entrypoint.
	(LIBGCCJIT_HAVE_gcc_jit_context_add_command_line_option): New
	macro.
	* libgccjit.map: Put existing symbols within LIBGCCJIT_ABI_0; add
	LIBGCCJIT_ABI_1 and gcc_jit_context_add_command_line_option.

gcc/testsuite/ChangeLog:
	PR jit/66628
	* jit.dg/all-non-failing-tests.h: Add note about
	test-extra-options.c.
	* jit.dg/test-extra-options.c: New testcase.

From-SVN: r225205