Move stubdata.c from icudata to icuuc

icu.gyp

Index: icu.gyp
diff --git a/icu.gyp b/icu.gyp
index 54af0e416f23a8da2bbcd620665f4e682dd117d5..3677f9b4d3e3ef7049c170403ec79c89b9618843 100644
--- a/icu.gyp
+++ b/icu.gyp
@@ -136,8 +136,6 @@
             [ 'icu_use_data_file_flag==1', {
               # Remove any assembly data file.
               'sources/': [['exclude', 'icudtl_dat']],

[jungshik at Google, 2015/02/14 15:16:56]

To prevent libicudata.a or its Win-equivalent (that will not be generated any
more) from being looked for by a linker, I'll make another CL to add 'type:
none' to this section. Somehow it was not a problem in my local tests
(Win,Mac/Linux) nor in most trybots (except for one ios bot).   

-              # Compile in the stub data symbol.
-              'sources': ['source/stubdata/stubdata.c'],
 
               # Make sure any binary depending on this gets the data file.
               'conditions': [
@@ -325,10 +323,13 @@
             [ 'use_system_icu==0 and want_separate_host_toolset==0', {
               'toolsets': ['target'],
             }],
-            [ 'OS == "win" and icu_use_data_file_flag==0', {
+            [ 'OS == "win" or icu_use_data_file_flag==1', {
               'sources': [
                 'source/stubdata/stubdata.c',
               ],
+              'defines': [
+                'U_ICUDATAENTRY_IN_COMMON',
+              ],
             }],
             [ 'OS == "win" and clang==1', {
               # Note: General clang warnings should go in the