Allow library entries of the form '-lfoo' on MSVS.

pylib/gyp/generator/msvs.py

 # Copyright (c) 2012 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import copy
 import ntpath
 import os
 import posixpath
 import re
 import subprocess
@@ skipping 1106 matching lines @@
   """
   libraries = spec.get('libraries', [])
   # Strip out -l, as it is not used on windows (but is needed so we can pass
   # in libraries that are assumed to be in the default library path).
   # Also remove duplicate entries, leaving only the last duplicate, while
   # preserving order.
   found = set()
   unique_libraries_list = []
   for entry in reversed(libraries):
     library = re.sub('^\-l', '', entry)
+    if not os.path.splitext(library)[1]:
+      library += '.lib'
     if library not in found:
       found.add(library)
       unique_libraries_list.append(library)
   unique_libraries_list.reverse()
   return unique_libraries_list
 
 
 def _GetOutputFilePathAndTool(spec, msbuild):
   """Returns the path and tool to use for this target.
 
@@ skipping 2019 matching lines @@
   action_spec.extend(
       # TODO(jeanluc) 'Document' for all or just if as_sources?
       [['FileType', 'Document'],
        ['Command', command],
        ['Message', description],
        ['Outputs', outputs]
       ])
   if additional_inputs:
     action_spec.append(['AdditionalInputs', additional_inputs])
   actions_spec.append(action_spec)