Adding configurable ASI_DEBUG_LOG macro

see ASIHTTPRequestConfig.h for additional information

@@ -207,7 +207,7 @@
 	[super buildPostBody];
 	
 #if DEBUG_FORM_DATA_REQUEST
-	NSLog(@"%@",[self debugBodyString]);
+	ASI_DEBUG_LOG(@"%@",[self debugBodyString]);
 	[self setDebugBodyString:nil];
 #endif
 }

@@ -11,6 +11,12 @@
 // Debug output configuration options
 // ======
 
+// If defined will use the specified function for debug logging
+// Otherwise use NSLog
+#ifndef ASI_DEBUG_LOG
+    #define ASI_DEBUG_LOG NSLog
+#endif
+
 // When set to 1 ASIHTTPRequests will print information about what a request is doing
 #ifndef DEBUG_REQUEST_STATUS
 	#define DEBUG_REQUEST_STATUS 0
@@ -33,5 +39,5 @@
 
 // When set to 1, ASIHTTPRequests will print information about HTTP authentication (Basic, Digest or NTLM) to the console
 #ifndef DEBUG_HTTP_AUTHENTICATION
-#define DEBUG_HTTP_AUTHENTICATION 0
+    #define DEBUG_HTTP_AUTHENTICATION 0
 #endif