build: pass --no-parallel by default to gyp

gyp by default now tries to process gyp files in parallel by using
python's multiprocessing module, but it has problems on oddball
platforms. We don't have many files or complex dependency chains that
would benefit from parallel processing so disable by deafult

fixes nodejs#6640

configure

@@ -695,7 +695,7 @@ config = '\n'.join(map('='.join, config.iteritems())) + '\n'
 write('config.mk',
       '# Do not edit. Generated by the configure script.\n' + config)
 
-gyp_args = [sys.executable, 'tools/gyp_node.py']
+gyp_args = [sys.executable, 'tools/gyp_node.py', '--no-parallel']
 
 if options.use_ninja:
   gyp_args += ['-f', 'ninja-' + flavor]