Modula-2: Add claimed command line options to lang.opt [PR108555].

Modula-2: Add claimed command line options to lang.opt [PR108555].

This is a partial reversion of the changes in r13-5373-g80cf2c5e8f496b.

As observed in the PR, handling the C and Driver options in the Modula-2
lang-specific code could be difficult to emulate; This reverts to adding
the required options to the language-specific .opt file.

Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
	PR modula2/108555
	PR modula2/108182
	PR modula2/102343

gcc/m2/ChangeLog:

	* gm2-lang.cc (gm2_langhook_option_lang_mask): Do not claim CL_C
	or CL_DRIVER.
	(gm2_langhook_init_options): Handle options that we want to pass
	to the preprocessor.
	* lang-specs.h: Pass -B and -save-temps to regular compile lines.
	* lang.opt: Add C and Driver options that Modula-2 intercepts for
	internal use. Reorder options into two sections and to collate.