deps: backport GYP fix to fix AIX shared suffix

Required to support the shared library builds on AIX - this sets the
shared library suffix within GYP to .a instead of .so on AIX
My patch: https://codereview.chromium.org/2492233002/ was landed as
as part of this one which fixed some other (not required, but
included for completeness of the backport) changes:

Ref: https://codereview.chromium.org/2511733005/

Author: Stewart Addison

tools/gyp/AUTHORS

@@ -1,9 +1,10 @@
 # Names should be added to this file like so:
 # Name or Organization <email address>
 
-Google Inc.
-Bloomberg Finance L.P.
-Yandex LLC
+Google Inc. <*@google.com>
+Bloomberg Finance L.P. <*@bloomberg.net>
+IBM Inc. <*@*.ibm.com>
+Yandex LLC <*@yandex-team.ru>
 
 Steven Knight <[email protected]>
 Ryan Norton <[email protected]>

tools/gyp/PRESUBMIT.py

@@ -73,23 +73,15 @@
 ]
 
 
-def CheckChangeOnUpload(input_api, output_api):
-  report = []
-  report.extend(input_api.canned_checks.PanProjectChecks(
-      input_api, output_api))
-  return report
-
-
-def CheckChangeOnCommit(input_api, output_api):
-  report = []
-
+def _LicenseHeader(input_api):
   # Accept any year number from 2009 to the current year.
   current_year = int(input_api.time.strftime('%Y'))
   allowed_years = (str(s) for s in reversed(xrange(2009, current_year + 1)))
+
   years_re = '(' + '|'.join(allowed_years) + ')'
 
   # The (c) is deprecated, but tolerate it until it's removed from all files.
-  license = (
+  return (
       r'.*? Copyright (\(c\) )?%(year)s Google Inc\. All rights reserved\.\n'
       r'.*? Use of this source code is governed by a BSD-style license that '
         r'can be\n'
@@ -98,8 +90,18 @@ def CheckChangeOnCommit(input_api, output_api):
       'year': years_re,
   }
 
+def CheckChangeOnUpload(input_api, output_api):
+  report = []
+  report.extend(input_api.canned_checks.PanProjectChecks(
+      input_api, output_api, license_header=_LicenseHeader(input_api)))
+  return report
+
+
+def CheckChangeOnCommit(input_api, output_api):
+  report = []
+
   report.extend(input_api.canned_checks.PanProjectChecks(
-      input_api, output_api, license_header=license))
+      input_api, output_api, license_header=_LicenseHeader(input_api)))
   report.extend(input_api.canned_checks.CheckTreeIsOpen(
       input_api, output_api,
       'http://gyp-status.appspot.com/status',

tools/gyp/pylib/gyp/generator/make.py

@@ -92,7 +92,10 @@ def CalculateVariables(default_variables, params):
     if flavor == 'android':
       operating_system = 'linux'  # Keep this legacy behavior for now.
     default_variables.setdefault('OS', operating_system)
-    default_variables.setdefault('SHARED_LIB_SUFFIX', '.so')
+    if flavor == 'aix':
+      default_variables.setdefault('SHARED_LIB_SUFFIX', '.a')
+    else:
+      default_variables.setdefault('SHARED_LIB_SUFFIX', '.so')
     default_variables.setdefault('SHARED_LIB_DIR','$(builddir)/lib.$(TOOLSET)')
     default_variables.setdefault('LIB_DIR', '$(obj).$(TOOLSET)')
 
@@ -1349,7 +1352,10 @@ def ComputeOutputBasename(self, spec):
       if target[:3] == 'lib':
         target = target[3:]
       target_prefix = 'lib'
-      target_ext = '.so'
+      if self.flavor == 'aix':
+        target_ext = '.a'
+      else:
+        target_ext = '.so'
     elif self.type == 'none':
       target = '%s.stamp' % target
     elif self.type != 'executable':