Plugin: Fix Gyp Linux-ARM build by passing "-z defs" in properly
Plugin: Fix Gyp Linux-ARM build by passing "-z defs" in properly

Fix breakage introduced by r2708.  Not all versions of gcc will pass
"-z defs" through to the linker, so wrap it with "-Wl".

BUG=http://code.google.com/p/nativeclient/issues/detail?id=642
TEST=check command line printed by "make V=1" on Gyp build

Review URL: http://codereview.chromium.org/3042001

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@2709 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client