crypto: improve error messages

Introduce a new MACRO to check if the data is a String object and
update existing MACROs to include the actual object description to
be printed in case of an error.

PR-URL: #3100

Author: thefourtheye

lib/_tls_wrap.js

@@ -762,7 +762,7 @@ function Server(/* [options], listener */) {
   var timeout = options.handshakeTimeout || (120 * 1000);
 
   if (typeof timeout !== 'number') {
-    throw new TypeError('"handshakeTimeout" option must be a number');
+    throw new TypeError('handshakeTimeout must be a number');
   }
 
   if (self.sessionTimeout) {