Finish compatibility with the old handlebars:

* foo"bar" is an invalid param
* {{foo}}bar{{/baz}} is invalid
* fix a number of issues with inverse sections
* add partials

lib/handlebars/printer.js

@@ -37,8 +37,8 @@ Handlebars.PrintVisitor.prototype.program = function(program) {
 
     this.padding++;
 
-    for(var i=0, l=inverse.length; i<l; i++) {
-      out = out + this.accept(inverse[i]);
+    for(var i=0, l=inverse.statements.length; i<l; i++) {
+      out = out + this.accept(inverse.statements[i]);
     }
   }