Add fsync and fdatasync to gyp build on libnosys
Add fsync and fdatasync to gyp build on libnosys

BUG= https://code.google.com/p/nativeclient/issues/detail?id=1229
TEST= Build nonsys_lib with gyp + ninji
R=mseaborn@chromium.org

Review URL: https://codereview.chromium.org/19398003

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@11773 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client