Add -XX:MadviseRandomAccess option

If enabled, ART will advise random access to the kernel for files
that are thought to have such access patterns.

Bug: 67772594
Test: verify that -XX:MadviseRandomAccess:true is passed to runtime init
Change-Id: Iaaf8159d2ed69ed4968870a6104e3d1a8454b711
5 files changed