Ensure fp.rearg returns a curried function. [closes #2413]

fp/_baseConvert.js

@@ -209,6 +209,12 @@ function baseConvert(util, name, func, options) {
         return func;
       };
     },
+    'rearg': function(rearg) {
+      return function(func, indexes) {
+        var n = indexes ? indexes.length : 0;
+        return curry(rearg(func, indexes), n);
+      };
+    },
     'runInContext': function(runInContext) {
       return function(context) {
         return baseConvert(util, runInContext(context), options);

fp/_mapping.js

@@ -321,6 +321,7 @@ exports.skipFixed = {
   'flowRight': true,
   'iteratee': true,
   'mixin': true,
+  'rearg': true,
   'runInContext': true
 };