Make os.ProcAttr construction more future-proof.
Make os.ProcAttr construction more future-proof.

The attached trivial patch will make gocode compatible with upcoming
changes (else http://codereview.appspot.com/4607046 will break
compilation).

artnez/gocode,mdempsky/gocode,lmh008/gocode,lmh008/gocode,mattn/gocode,thousandhigh/gocode,ghiden/gocode,TheBB/gocode,louiseGrandjonc/gocode,suncycheng/gocode,MerlinDMC/gocode,thousandhigh/gocode,MerlinDMC/gocode,syohex/gocode,suncycheng/gocode,MerlinDMC/gocode,nsf/gocode,nsf/gocode,mem/gocode,suncycheng/gocode,mattn/gocode,artnez/gocode,beni55/gocode,mem/gocode,syohex/gocode,fjl/gocode,TheBB/gocode,ghiden/gocode,louiseGrandjonc/gocode,beni55/gocode,fjl/gocode,fjl/gocode,mem/gocode,mdempsky/gocode,artnez/gocode,toqueteos/LightTable-Go,beni55/gocode,syohex/gocode,mattn/gocode,suncycheng/gocode,kerr-huang/Gocode,thousandhigh/gocode,lmh008/gocode,thousandhigh/gocode,MerlinDMC/gocode,lmh008/gocode,mem/gocode,mdempsky/gocode,artnez/gocode,mattn/gocode,louiseGrandjonc/gocode,ghiden/gocode,nsf/gocode,kerr-huang/Gocode,kerr-huang/Gocode,ghiden/gocode,TheBB/gocode,fjl/gocode,kerr-huang/Gocode,syohex/gocode,beni55/gocode,nsf/gocode,toqueteos/LightTable-Go,louiseGrandjonc/gocode,TheBB/gocode