For V8, only build d8 on target

BUG=none
TBR=machenbach@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/139403002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18619 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

build/all.gyp

@@ -9,7 +9,7 @@
       'type': 'none',
       'dependencies': [
         '../samples/samples.gyp:*',
-        '../src/d8.gyp:d8',
+        '../src/d8.gyp:d8#target',
         '../test/cctest/cctest.gyp:*',
       ],
       'conditions': [