Use icu_gyp_path variable to reference ICU gyp file

That way, embedders can put the icu sources whereever they want and
aren't forced to put them under third_party/gyp

BUG=none
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/23598011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16749 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

build/standalone.gypi

@@ -77,6 +77,9 @@
     # as errors.
     'v8_code%': 0,
 
+    # Relative path to icu.gyp from this file.
+    'icu_gyp_path': '../third_party/icu/icu.gyp',
+
     'conditions': [
       ['(v8_target_arch=="arm" and host_arch!="arm") or \
         (v8_target_arch=="mipsel" and host_arch!="mipsel") or \

samples/samples.gyp

@@ -42,13 +42,13 @@
     'conditions': [
       ['v8_enable_i18n_support==1', {
         'dependencies': [
-          '<(DEPTH)/third_party/icu/icu.gyp:icui18n',
-          '<(DEPTH)/third_party/icu/icu.gyp:icuuc',
+          '<(icu_gyp_path):icui18n',
+          '<(icu_gyp_path):icuuc',
         ],
       }],
       ['OS=="win" and v8_enable_i18n_support==1', {
         'dependencies': [
-          '<(DEPTH)/third_party/icu/icu.gyp:icudata',
+          '<(icu_gyp_path):icudata',
         ],
       }],
     ],

src/d8.gyp

@@ -81,13 +81,13 @@
         }],
         ['v8_enable_i18n_support==1', {
           'dependencies': [
-            '<(DEPTH)/third_party/icu/icu.gyp:icui18n',
-            '<(DEPTH)/third_party/icu/icu.gyp:icuuc',
+            '<(icu_gyp_path):icui18n',
+            '<(icu_gyp_path):icuuc',
           ],
         }],
         ['OS=="win" and v8_enable_i18n_support==1', {
           'dependencies': [
-            '<(DEPTH)/third_party/icu/icu.gyp:icudata',
+            '<(icu_gyp_path):icudata',
           ],
         }],
       ],

tools/gyp/v8.gyp

@@ -855,8 +855,8 @@
         }],
         ['v8_enable_i18n_support==1', {
           'dependencies': [
-            '<(DEPTH)/third_party/icu/icu.gyp:icui18n',
-            '<(DEPTH)/third_party/icu/icu.gyp:icuuc',
+            '<(icu_gyp_path):icui18n',
+            '<(icu_gyp_path):icuuc',
           ]
         }, {  # v8_enable_i18n_support==0
           'sources!': [
@@ -866,7 +866,7 @@
         }],
         ['OS=="win" and v8_enable_i18n_support==1', {
           'dependencies': [
-            '<(DEPTH)/third_party/icu/icu.gyp:icudata',
+            '<(icu_gyp_path):icudata',
           ],
         }],
       ],