Support shared library build of Android for v8.

v8 depends on the system log library. If we built it as a separate so,
log needs to be included in the link step.

BUG=chromium:158821

Review URL: https://chromiumcodereview.appspot.com/11369081
Patch from Yaron Friedman <yfriedman@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12883 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

tools/gyp/v8.gyp

@@ -69,6 +69,14 @@
                 ],
               },
               'conditions': [
+                ['OS=="android"', {
+                  'libraries': [
+                    '-llog',
+                  ],
+                  'include_dirs': [
+                    'src/common/android/include',
+                  ],
+                }],
                 ['OS=="mac"', {
                   'xcode_settings': {
                     'OTHER_LDFLAGS': ['-dynamiclib', '-all_load']