Jruby optimization #17
                
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My rails application took ~20minutes to run "rake assets:precompile"; I added support to use closure jar directly and now takes 4minutes.
But, I had some issues with tests; in some cases
Compiles: "window.a=function(b){return console.b("hello "+b)};hello.c=function(b){return b_b};hello("world");\n"
Expected: "window.a=function(b){return console.log("hello "+b)};hello.b=function(b){return b_b};hello("world");\n"
Well, it's don't affect me (I don't use ADVANCED_OPTIMIZATIONS) but I want resolve this - any clue?