Python 3 compatibility

gyptest.py

Index: gyptest.py
diff --git a/gyptest.py b/gyptest.py
index 8e4fc47d5c804b910bdea078b0e696a5189887db..a541517dcd1881875d5b33fe3df22ec910bd0bdf 100755
--- a/gyptest.py
+++ b/gyptest.py
@@ -4,6 +4,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+from __future__ import print_function
+
 __doc__ = """
 gyptest.py -- test runner for GYP tests.
 """
@@ -190,13 +192,13 @@ def main(argv=None):
       tests.extend(find_all_gyptest_files(os.path.normpath(arg)))
     else:
       if not is_test_name(os.path.basename(arg)):
-        print >>sys.stderr, arg, 'is not a valid gyp test name.'
+        print(arg, 'is not a valid gyp test name.', file=sys.stderr)
         sys.exit(1)
       tests.append(arg)
 
   if opts.list:
     for test in tests:
-      print test
+      print(test)
     sys.exit(0)
 
   CommandRunner.verbose = not opts.quiet
@@ -222,6 +224,7 @@ def main(argv=None):
       'openbsd5': ['make'],
       'cygwin':   ['msvs'],
       'win32':    ['msvs', 'ninja'],
+      'linux':    ['make', 'ninja'],
       'linux2':   ['make', 'ninja'],
       'linux3':   ['make', 'ninja'],
       'darwin':   ['make', 'ninja', 'xcode', 'xcode-ninja'],