win,node-gyp: enable delay-load hook by default

The delay-load hook allows node.exe/iojs.exe to be renamed. See efadffe
for more background.

PR-URL: https://github.com/iojs/io.js/pull/1433
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

deps/npm/node_modules/node-gyp/addon.gypi

@@ -1,7 +1,7 @@
 {
   'target_defaults': {
     'type': 'loadable_module',
-    'win_delay_load_hook': 'false',
+    'win_delay_load_hook': 'true',
     'product_prefix': '',
 
     'include_dirs': [