* dbxread.c (process_one_symbol): Set n_opt_found based on whether

	* dbxread.c (process_one_symbol): Set n_opt_found based on whether
	a non-gcc N_OPT symbol is found.  Make SUN_FIXED_LBRAC_BUG a macro
	which returns 0 or 1 to say whether to do it.
	* config/sparc/sun4{sol2,os4}.h
	(SUN_FIXED_LBRAC_BUG,VARIABLES_INSIDE_BLOCK): Use n_opt_found so
	the right thing happens for both acc and SunOS4 /bin/cc.