cplus-dem.c (fancy_abort, [...]): Add prototype.

cplus-dem.c (fancy_abort, [...]): Add prototype.

	* cplus-dem.c (fancy_abort, demangle_integral_value,
	demangle_arm_hp_template, recursively_demangle,
	standard_symbol_characters, hp_symbol_characters, main): Add prototype.
	(program_name, program_version, fatal): Constify a char*.
	(usage, fatal): Mark with ATTRIBUTE_NORETURN.
	(main): Call return, not exit.

From-SVN: r29776