Remove parsing datatypes; result.cmdStatus added

Remove parsing datatypes in order to keep all the values as strings.
This is not compatible commit with an upstream version of driver.
cmdStatus shows the state of the command returned by Postgers.
It's useful to detect what type of command was executed (SELECT vs
INSERT etc)

Author: olsender

lib/result.js

@@ -22,19 +22,21 @@ var Result = function (rowMode) {
   this._parsers = []
   this.RowCtor = null
   this.rowAsArray = rowMode === 'array'
+  this.cmdStatus = null;
   if (this.rowAsArray) {
     this.parseRow = this._parseRowAsArray
   }
 }
 
 var matchRegexp = /^([A-Za-z]+)(?: (\d+))?(?: (\d+))?/
 
-// adds a command complete message
-Result.prototype.addCommandComplete = function (msg) {
-  var match
-  if (msg.text) {
-    // pure javascript
-    match = matchRegexp.exec(msg.text)
+//adds a command complete message
+Result.prototype.addCommandComplete = function(msg) {
+  this.cmdStatus = msg.text;
+  var match;
+  if(msg.text) {
+    //pure javascript
+    match = matchRegexp.exec(msg.text);
   } else {
     // native bindings
     match = matchRegexp.exec(msg.command)
@@ -52,15 +54,11 @@ Result.prototype.addCommandComplete = function (msg) {
   }
 }
 
-Result.prototype._parseRowAsArray = function (rowData) {
-  var row = []
-  for (var i = 0, len = rowData.length; i < len; i++) {
-    var rawValue = rowData[i]
-    if (rawValue !== null) {
-      row.push(this._parsers[i](rawValue))
-    } else {
-      row.push(null)
-    }
+Result.prototype._parseRowAsArray = function(rowData) {
+  var row = [];
+  for(var i = 0, len = rowData.length; i < len; i++) {
+    var rawValue = rowData[i];
+    row.push(rawValue);
   }
   return row
 }