	(mono_string_new_wrapper): new helper function, cut&pasted from 	x86, modified to check for NULL text to avoid branching in 	generated code 	(calculate_sizes): updated for string retval changes 	(emit_call_and_store_retval): updated for string retval
	(mono_string_new_wrapper): new helper function, cut&pasted from
	x86, modified to check for NULL text to avoid branching in
	generated code
	(calculate_sizes): updated for string retval changes
	(emit_call_and_store_retval): updated for string retval

svn path=/trunk/mono/; revision=2461

linkotec/mono_arch,linkotec/mono_arch,linkotec/mono_arch,biotrump/ffts-tec,biotrump/ffts-tec,biotrump/ffts-tec,biotrump/ffts-tec