Support large bits shift, Fixnum#<< and Fixnum#>>, issue #946
Support large bits shift, Fixnum#<< and Fixnum#>>, issue #946

mrubyc/mrubyc,mrubyc/mrubyc,TJ-Hidetaka-Takano/mrubyc,TJ-Hidetaka-Takano/mrubyc,TJ-Hidetaka-Takano/mrubyc,TJ-Hidetaka-Takano/mrubyc