add some more constants that zend defines

`composer.phar` was using these, so we should probably define them. I made them match what we were giving for `PHP_VERSION`.

hphp/system/idl/constants.idl.json

@@ -5043,6 +5043,26 @@
             "name": "PHP_VERSION",
             "value": "5.4.999-hiphop"
         },
+        {
+            "name": "PHP_MAJOR_VERSION",
+            "value": 5
+        },
+        {
+            "name": "PHP_MINOR_VERSION",
+            "value": 4
+        },
+        {
+            "name": "PHP_RELEASE_VERSION",
+            "value": 999
+        },
+        {
+            "name": "PHP_VERSION_ID",
+            "value": 504999
+        },
+        {
+            "name": "PHP_EXTRA_VERSION",
+            "value": ""
+        },
         {
             "name": "PKCS7_BINARY",
             "value": 128