Enable custom suffixes for Mac bundles.

pylib/gyp/xcodeproj_file.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.
 
 """Xcode project file generator.
 
 This module is both an Xcode project file generator and a documentation of the
 Xcode project file format.  Knowledge of the project file format was gained
 based on extensive experience with Xcode, and by making changes to projects in
 Xcode.app and observing the resultant changes in the associated project files.
@@ skipping 2296 matching lines @@
           if force_extension is None:
             force_extension = suffix[1:]
 
         if self._properties['productType'] == \
            'com.apple.product-type-bundle.unit.test':
           if force_extension is None:
             force_extension = suffix[1:]
 
         if force_extension is not None:
           # If it's a wrapper (bundle), set WRAPPER_EXTENSION.
+          # Extension override.
+          suffix = '.' + force_extension
           if filetype.startswith('wrapper.'):
             self.SetBuildSetting('WRAPPER_EXTENSION', force_extension)
           else:
-            # Extension override.
-            suffix = '.' + force_extension
             self.SetBuildSetting('EXECUTABLE_EXTENSION', force_extension)
 
           if filetype.startswith('compiled.mach-o.executable'):
             product_name = self._properties['productName']
             product_name += suffix
             suffix = ''
             self.SetProperty('productName', product_name)
             self.SetBuildSetting('PRODUCT_NAME', product_name)
 
         # Xcode handles most prefixes based on the target type, however there
@@ skipping 549 matching lines @@
       self._XCPrint(file, 0, '/* Begin ' + class_name + ' section */\n')
       for object in sorted(objects_by_class[class_name],
                            cmp=lambda x, y: cmp(x.id, y.id)):
         object.Print(file)
       self._XCPrint(file, 0, '/* End ' + class_name + ' section */\n')
 
     if self._should_print_single_line:
       self._XCPrint(file, 0, '}; ')
     else:
       self._XCPrint(file, 1, '};\n')