esearch should call _esearch and return data to callback. Removed space in _esearch command and put it before encode, as query already has a space

lib/Connection.js

@@ -829,7 +829,7 @@ Connection.prototype._sort = function(which, sorts, criteria, cb) {
 };
 
 Connection.prototype.esearch = function(criteria, options, cb) {
-  this._search('UID ', criteria, options, cb);
+  this._esearch('UID ', criteria, options, cb);
 };
 
 Connection.prototype._esearch = function(which, criteria, options, cb) {
@@ -1099,6 +1099,8 @@ Connection.prototype._resUntagged = function(info) {
     this.state = 'authenticated';
   else if (type === 'sort' || type === 'thread')
 	this._curReq.cbargs.push(info.text);
+  else if (type === 'esearch')
+	this._curReq.cbargs.push(info.text);
   else if (type === 'search') {
     if (info.text.results !== undefined) {
       // CONDSTORE-modified search results