Fix compiler bug when trying to access full argument list

compiler.js

       return '{ value: \'' + node.value + '\' }'
       break
     case 'ArgvLiteral':
-      if (node.value === 0) {
+      if (node.value === '0') {
         return '{ value: process.argv.slice(2).join(\' \') }'
       } else {
         return '_.__get_arg(' + (+node.value+1) + ')'

examples/fizzbuzz.mc

   )
 1)
 
+(log {0})
+
 (if (eq {1} "")
   (fizzbuzz 25) | (fizzbuzz {1}))