Another merge from trunk to gccgo branch

I merged revision 194240 from trunk to the gccgo branch. Ian

Another merge from trunk to gccgo branch

I've merged revision 194186 from trunk to the gccgo branch. Ian

Another merge from trunk to gccgo branch

I've merged revision 194015 from trunk to the gccgo branch. Ian

Another merge from trunk to gccgo branch

I've merged trunk revision 183655 to the gccgo branch. Ian