copy_metadata for all reqs. Fixes "gam version extended" dep outputs

src/gam.spec

@@ -1,12 +1,17 @@
 # -*- mode: python ; coding: utf-8 -*-
 from os import getenv
+from re import search
 from sys import platform
 
 from PyInstaller.utils.hooks import copy_metadata
 
 
 extra_files = []
-extra_files += copy_metadata('google-api-python-client')
+with open('requirements.txt', 'r') as reqs:
+    for req in reqs:
+        r = search('^[a-z,A-Z,0-9-_]*', req)
+        pkg = r.group(0) if r else ''
+        extra_files += copy_metadata(pkg, recursive=True)
 extra_files += [('cbcm-v1.1beta1.json', '.')]
 extra_files += [('contactdelegation-v1.json', '.')]
 extra_files += [('admin-directory_v1.1beta1.json', '.')]