build: install common.gypi along with headers

node-gyp requires this file

diff --git a/tools/install.py b/tools/install.py
index 0012a7e..7249de3 100755 (executable)
--- a/tools/install.py
+++ b/tools/install.py
@@ -142,6 +142,7 @@ def files(action):
   if 'true' == variables.get('node_install_npm'): npm_files(action)
 
   action([
+    'common.gypi',
     'config.gypi',
     'src/node.h',
     'src/node_buffer.h',