JRuby boolean options no longer need =true at the end

gistfile1.txt

$ jruby -Xir.print -e 'puts "Hello!"'
2016-01-07T22:57:36.180-06:00: IRScope: Printing final IR for -e
begin SCRIPT_BODY<-e>
signature(pre=0,opt=0,post=0,rest=NONE,kwargs=0,kwreq=0,kwrest=false)
0:          *%self := recv_self
1:            %v_0 := load_frame_closure
2:  %current_scope := copy(scope<0>)
3: %current_module := copy(mod<0>)
4:                    line_num(lineNumber: 0)
5:            %v_3 := call_1f(*%self, fix<1>, fixNum: 1, callType: FUNCTIONAL, name: puts, potentiallyRefined: false)
6:                    return(%v_3)

Hello!

$