Lambda Lifting Optimization

[nyuichi]

"Optimization: lift supercombinator lambdas · Issue #91 · puffnfresh/roy"
puffnfresh/roy#91
And profile result:
http://jsperf.com/lifted-lambdas

The profits look great.

[shibukawa]

#265 is related this.

[kazuho]

closing as a duplicate of #265