common.opt (-G): Don't define option here.

	* common.opt (-G): Don't define option here.
	* config/g.opt: New.
	* config.gcc: Use g.opt for alpha, frv, ia64, lm32, m32r, mips,
	rs6000/powerpc and score targets.
	* opts.c (common_handle_option): Don't handle -G here.
	* config/alpha/alpha.c (alpha_handle_option): Handle -G.
	* config/frv/frv.c (frv_handle_option): Handle -G.
	* config/ia64/ia64.c (ia64_handle_option): Handle -G.
	* config/lm32/lm32.c (lm32_handle_option, TARGET_HANDLE_OPTION):
	New.
	* config/m32r/m32r.c (m32r_handle_option): Handle -G.
	* config/mips/mips.c (mips_handle_option): Handle -G.
	* config/rs6000/rs6000.c (rs6000_handle_option) Handle -G.
	* config/score/score.c (score_handle_option): Handle -G.

From-SVN: r162721