Pull taku910/zinnia@581faa8

This CL updates src/third_party/zinnia as follows:
  from: taku910/zinnia@814a49b
    to: taku910/zinnia@581faa8

It turns out that we could not build Zinnia as a static library on
Windows, which ends up with LNK2001 linker errors in Mozc.

This CL addresses this issue by updating Zinnia and specifies
ZINNIA_STATIC_LIBRARY.

BUG=#327
TEST=
REF_BUG=26887740
REF_CL=132283143
REF_TIME=2016-09-05T22:28:17-07:00
REF_TIME_RAW=1473139697 -0700

Author: yukawa

src/data/version/mozc_version_template.bzl

@@ -30,7 +30,7 @@
 
 MAJOR=2
 MINOR=18
-BUILD=2609
+BUILD=2610
 REVISION=102
 # This version represents the version of Mozc IME engine (converter, predictor,
 # etc.).  This version info is included both in the Mozc server and in the Mozc

src/handwriting/zinnia.gyp

@@ -63,6 +63,13 @@
               # So that dependent file can look up <zinnia.h>
               '<(zinnia_src_dir)',
             ],
+            'conditions': [
+              ['target_platform=="Windows"', {
+                'defines': [
+                  'ZINNIA_STATIC_LIBRARY',
+                ],
+              }],
+            ],
           },
           'cflags': [
             '-Wno-type-limits',
@@ -78,6 +85,7 @@
                 'HAVE_WINDOWS_H=1',
                 'PACKAGE="zinnia"',
                 'VERSION="0.06"',
+                'ZINNIA_STATIC_LIBRARY',
               ],
             }],
             ['target_platform=="Linux" or target_platform=="Mac"', {