Fix Android x86 builds of libvpx

Android previously didn't define rand(). We had a workaround
which used the inline _rand, but they added rand() to android
and removed _rand. So now we call lrand48() which is available
in all versions.

BUG=388490
TBR=tomfinegan@chromium.org

Review URL: https://codereview.chromium.org/355763002

git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/libvpx@279590 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
1 file changed